There was a thread a few weeks ago about his planned last day.
That doesn't sound like a firing to me.
Secondly, I don't think we (M-Chatters) should publicly praise cast members BY NAME for breaking rules, even if it results in "better show," because this (whatever "this" is -- I'm guessing a reprimand which led to Mikey quitting) is what can happen.
That is, unless you want the CM to be reprimanded.
I have absolutely no problem with CMs saying whatever they want to say about work, backstage, etc, although it would help them a lot more if they stayed fairly anonymous (i.e. "I work in ODV" or "I work at Pirates" instead of "My name is Bob and I'm the guy who brushes the Matterhorn yeti's teeth.")