I'm surprised it took this long. Six weeks is a long time.
Well, of course, the fact that he's dating a man with ties to mafia-run gambling rings has nothing to do with it either. (/sarcasm)
The league is already on record saying that they want him in the league. If anything, the individual teams are shying away from him because it would create a media circus (see: Tim Tebow)—and that's something Sam himself created.
He made a little miscalculation in trying to up his draft status by playing the gay card.