Jason seemed liked just another player in the minors. Obviously he devoted himself to a difficult but ultimately rewarding weight training regimen. Oh yeah, and a whole freaking bunch of steroids.
I don't think his career drop off can totally be blamed on stopping the steroids. I think that like a lot of players, he hit the early 30's and his eyesight naturally got worse.
At age 30 he had 129 BB's and only 83 K's, while hitting .342. At age 32 he also had 129 BB's, but 140 K's while hitting only .250.
He had a nice signature in the minors.