http://www.drroyspencer.com/2009/01/increasing-atmospheric-co2-manmade%E2%80%A6or-natural/
I think you may find this interesting, and it will answer many of your questions without me typing a lot.
Spencer's work is why I put the caveat on the isotope statement.
You might be interested to know that I've cited part of that page in the past: "This is the trouble with model simulations. The ones that get published are usually the ones that support the modeler’s preconceived notions, while alternative model solutions are ignored." The bias in research funding and publication is a huge problem.
Reformatting your words for ease and clarity of response...
I believe we are still at the questions:
Does CO2 force temperature change,
High-school chemistry describes that it would. One could postulate that the temperature is changing faster than our CO
2 inputs affect it, but the fact is, in an equilibrium, the fulcrum will shift when an input is made to one side of an equation.
temperature increase push CO2 out of solution (especially in the oceans),
Again, does anyone doubt high-school chemistry? Yes, temperature would push it out of solution, given the ocean conditions. It's one of the feedback mechanisms that can exacerbate a temperature increase.
and thus make CO2 an indicator of temperature change rather than a forcing agent, or does man-produced and naturally released CO2 affect the temperature.
Why can't it be both?
In cases where there's been no major input of CO
2, then a change in temperature--perhaps from a change of insolation, or even local perturbations, or transport mechanisms (e.g., change in ocean currents leading to warming in areas that had permafrost)--could lead to a change in atmospheric CO
2 to restore equilibrium. Conversely, a change in CO
2 could lead to a change in temperature, to restore equilibrium. And we have been adding CO
2 rapidly... how many years of sequestered carbon have we released to the atmosphere every year for the past several decades?
If so, how much, or are there other factors involved? (Is anthropogenic CO2 of negligible effect?)
The ice core data show that it's not negligible in amount. As for effect, it would be rather odd for such an input not to have a corresponding output.
Before that can be decided, note that the temperature measurements since the industrial revolution occur in areas where there is industrialization and urban growth. It is well enough documented that poorly sited, or changes in the siting of measuring equipment can cause changes in temperature readings which are not necessarily reflected in the climate, but are actually an artifact of that development--especially paving, HVAC exhaust, jet aircraft exhaust plumes, and the like. It has been stated that a significant portion of us temperature measuring stations are in locations which compromise the validity of that data, and in almost every case, in a way which would cause those stations to record higher temperatures than would be accurate outside of the microclimate caused by the development.
http://www.foxnews.com/tech/2010/02/26/climate-data-compromised-by-heat-sources.html
http://www.foxnews.com/science/2013/08/13/weather-station-closures-flaws-in-temperature-record.html
and then, there are other risks....
http://money.cnn.com/2014/11/12/technology/security/weather-system-hacked/index.html
I am aware of these concerns. Contrary to what the peanut gallery might think, I'm actually rather skeptical of much that is claimed by the alarmists. But I believe my assertions fall within the envelope of a good evaluation of available knowledge.
But beneath it all there is a hysteria level stirred by the MSM we don't trust, fostered on university campuses which have become hotbeds of lunacy and catered to by a class of politicians who do things like: https://wattsupwiththat.com/2017/01/16/new-york-announces-nuclear-shutdown-to-fight-climate-change/
Hear, hear!!

One encouraging note... millennials seem to be very pro-nuclear.
It is time to take a deep breath and determine if there is really a change in global temperature (which requires accurate measurements), is so is it one which is unprecedented, if so, what should the target (optimum) temperature be, and whether we are having a meaningful effect on that system which has operated with virtually (or actually) no human input in the past.
I'm with you there.
If the four answers aren't all "yes", let nature take its course, and continue to develop the technology which will permit us to deal with any problems, rather than abandon that capability in a fit of hubris only to die off because we threw away the means to survive.
Sounds like a pretty good answer, very similar to my view. Crippling our economy is not a smart response, as this change might be far beyond what we can affect, and if so, we'll need a strong economy to manage any response, especially if we get into a runaway situation. (I say "we", knowing full well it will be suckers in the future...)