The mother's a real piece of work to be sure, but an assumption on your part(as to what transpired between the two of them ), I'll take what the authorities are working off of as opposed to your conjecture. Admitting guilt hardly makes him into a "stand up guy", it just helps confirm he's guilty of the charge against him. A real stand up guy wouldn't have let this happen to begin with. 
Definition of "stand up" : "marked by a high-degree of personal integrity or loyalty"
http://www.merriam-webster.com/dictionary/stand%E2%80%93up

You really don't know what your talking about, and I have no reason to continue with you on this. Crawl out of your cave and get a little sun, might do you a world of good... or not.