I think it is really really clear what happened to cause this all, but of course, all the Ricky haters would say no way...it simply has to do with pot...which I completely don't think it did.
I think there are three major reasons Ricky quite, but Ricky won't really say them because he even knows it's not right especially if he is coming back.
IMO..
1. RW couldn't stand Wanny, knew he was going to get run into the ground again, and saw that the offensive scheme was a cluster#*&@ for the upcoming season.
2. Ricky knew he had a failed drug test coming, which scared him that it would go public.
3. Training camp got close, he got very ANXIOUS because he has SOCIAL ANXIETY DISORDER and when the thoughts went racing through his body that he was busted, it was going to go public, the offense looks like crap, he can't stand Wanny, and practice was ready to start in a couple days...he bailed! This is EXACTLY the behavior of a person with social anxiety disorder.
From there he went into a shell, trying to hide but also trying to be a bit strong and provide answers, none of which he knew. Meanwhile he was getting pummelled by everyone verbally and he just tangled his own thoughts in anxiety and fear...which made him sound even more crazy. All these jokes about RW and pot by people...come on, are you all naive to think that there are not 100's of other NFL, NBA , and MLB players who are probably worse than RW?
No one is seeing the big picture, this whole ordeal is a classic case of social anxiety coming out of remission. That is what is at the center of this all. But meanwhile people bash away at him like he did this all to tick them off and sit back on his phat yacht sticking it to them.