Just to clarify something: There is no such thing as "self-plagiarism" just like there's no such thing as "self-escrowing".  If you copy/paste or repost something that you, yourself, have written it is by definition not plagiarism.  So please, let's stop repeating this meaningless phrase.

I've got Shamm on ignore, so as far as I'm concerned he can keep doing whatever he likes until he gets punished by the moderators, though I think he'll probably learn his lesson from this thread.  I can also see where OP is coming from, because that kind of behavior is exactly what you'd expect from somebody desperately trying to earn merits. 

The only problem is that Shamm has a point, i.e., those kinds of requests for help are posted all the time and there's no hard evidence linking Shamm with any of those other accounts.  So without such evidence, there's really nothing to do but to give him the benefit of the doubt in this case.