Ghostwheel
Pyrrhonist
Yeah, if everything said about him is true, but that's different than murder or kidnapping. Might still be bad, but different....Even if through further investigation/tips, it is found that Mark had nothing to do with Dylan's disappearance, the damage this man has done to his children and ex-wives and other family members is displorable and totally uncalled for.
But it seems, Mark is just being Mark....this behavior didn't develop since Thanksgiving 2012.
ETA: Don't think I like Mark's actions, I don't. Just not willing to convict him of murder with what evidence is available
EATA: I do think he had something to do with the disappearance. I feel in my bones he is leaving important information out. IMO.