Article does give context as to what "inconsistently candid" meant: Altman allegedly went to each board member to say some negative things about Toner, but when board members got together to verify consistency they found out Altman said a false or misleading thing to at least one board member about Toner.

That's not a good look on Altman at all, it looks like Altman was using divide-and-conquer in a skeezy way, spreading around negative impression, even rumors, about his bosses, as a means dispose of a problem.