Adam Herman--I do not follow him on Twitter because too many of his posts are just about politics or whatever and not hockey. Which, it's his Twitter, that's fine, just not what I'm interested in (I actually am, but not from him).
That said, I know he takes his site really seriously. I have never known him or anyone on that site to simply make something up. If he's confident enough to post that multiple sources told him that, then multiple people told him that. Are they legitimate? I don't know. Again, though, he wouldn't concoct that on his own, even with his general disdain for DeAngelo.
I could see him not really getting the whole story--like it was a joke that went too far; we all know guys who act like that and DeAngelo seems like he fits the mold (me projecting, based on what I've read and heard that's verified). Or, maybe it didn't happen, and multiple people are lying to him. But, I really doubt it's something he decided to pull out of thin air.
Just my opinion.