I read the article you cite. It is devoid of any new information and certainly nothing that says the allegation cannot be true, only an opinion that no one at Bain would have known Rmoney's tax information so it must have come from outside. Now there are two responses I can make to that. If that is true, then Malkin is saying that Reid has good information which came from Rmoney's accountant office perhaps "found it on a fax machine", or perhaps Mitt liked to brag about how he worked the tax system so well his tax liability went to zero and that bragging is the source of this allegation. So when Malkin quotes another author who states that it is impossible the leak can from within Bain he ignores the possibility is was a Bain peer who was told directly of the non-payment in a conversation. Either way, nothing in Malkin's article makes any claim that laws were broken as was alleged. It does say, as I stated that Reid's claim is hearsay and clearly is more a political ploy than evidence based.
Again, Mitt can stop all these rumors by doing what every other modern candidate has done. Maybe its all those donations to Planned Parenthood that he wants to hide.
As for the statement that Reid would not take a call from a former Bain insider, that's Malkin's proof? Do you think he wouldn't if the message was "I've got information on Rmoney's non payment of income tax"
The etch-a-sketch doesn't work on tax documents. It looks as if he is hiding more than just the fact that he is extremely wealthy. We all already know that so there is no reason to refuse to release the returns just because it would confirm that known fact.