I'm going to say no. Not to be a contrarian, but I think the "DH bias" is going to hamstring him. I think enough voters offended about DHs soiling the purity of the game will tip the scales against him. Rick Diplander in our own fair city has been campaigning against Thomas for quite some time.
Also, I make a prediction-an unknown voter will get his name in the headlines by writing an article saying "How do we know Thomas never juiced? Because he says so? Well, blah blah blah blah."
"Message to all WSIers who think that Thomas will be a first-or-second ballot Hall of Famer-with guys like Telander holding the "Keys to the Kingdom" and openly campaigning against the DH-I will be kind and say You Are Dreaming. Thomas and his supporters are going to have to shout his case from the rooftops before the BBWAA finally gets the message. " -Some Dope on WSI, 2/13/2010. Whoops, that was me.
Then again, I think I have a promising career as a TV psychic. John Edward, watch out!