I'm sorry, Mr. "Professor". But you're reading way too much into Jon Heyman's 2007 "does Sosa belong in the Hall?" piece if you think it makes him a hypocrite now for calling out people who baselessly speculate whether this guy or that guy is using steroids.
You have to keep in mind that Heyman did not start the speculation that Sammy Sosa had used steroids, especially after his disasterous testimony on Capitol Hill. In fact, I think his piece could be read as a defense of Sosa against people who want to keep him out of the Hall against baseless speculation.
Steroids speculation is making everyone crazy. But one of them is not Jon Heyman. It's the nameless proprietor of the Rays Index.
If the blogosphere is going to be the mainstream media of the future, it needs to be able to look critically on itself and catch itself when it errs.