I'm not saying Thomas has used steroids...in fact I hate the speculation about players. But you really can't speculate about who was clean either. I mean honestly...Palmeiro wagged that finger in front of Congress and no one thought anything other than the fact that he was a great force against steroids...and then he tests positive! Juan Rincon and Rafael Betancourt certainly didn't fit our preconceived picture of steroids users either. Just as I think it's unfair to speculate about who was not clean I think it's impossible to speculate about who was clean. Even David Eckstein could be using...maybe it takes steroids for him to bulk up to his 5'7" 165 pound frame.
The fact is that we just don't know. What we do know is that lots of players were using, that it was probably at least 10% of players if not more and that it's a damn shame. Baseball should have cleaned this up a lot earlier.