He obviously got angry over something, hence the "yank his toys and go home" approach.  It wasn't legal issues.  If it was just legal issues, he could have put them all into a torxxxx or something before quitting.  Besides, a cease and desist from who?  The legal guild for the representation of dead actors?  No.  If he got a cease and desist, it was from one actor's estate, which would have bearing on only one actor.  No reason to give up altogether.  And it wasn't like he was being very careful to avoid legal issues in the first place; he made it very obvious who the representations were supposed to be, which you shouldn't have to do if they're good likenesses - they should speak for themselves.

He's probably doing his thing under a different name.  In fact, I think he's one of the vendors here in the marketplace.  I recently had a thread on this very subject deleted so I'll just keep mum about the specifics.