This was inevitable. Apple's shown they'll go after people who tell the truth about them if Apple doesn't want a paticular truth told. So it was just a matter of time before they smacked Stallman down for slandering their OS.
I can't see a motivation for him to post a retraction for something he can't confirm in either regard, so I also assume that Apple has pursued some legal action.
Apple does have complete control over the software on your system. Every time you do an update you give control to them, but this is no different than any other OS that is upgradable. The difference is that OSX users have no transparency into what they are doing, and no way to audit it. So why would they need a backdoor if you will sudo and hand them the keyboard?
Lets imagine that he simply stopped talking about the back door. Is this something he is asked about a lot? If so, he would have to recant eventually, why not now?
You are correct, and I shouldn't have assumed anything. However, I still believe legal action to be the likely cause.
"but this is no different than any other OS that is upgradable"
Except for the fact that in free and open-source you can examine the code that conducts the update.
For instance, my iPod-to-TV cable stopped working when I update my iPod touch (http://www.dieblinkenlights.com/blog_en/i-really-want-to-lik...). Could I examine the update, I could rather easily change the part that broke perfectly functional hardware and reverse the change in functionality Apple imposed upon me.
The mistake you made here was commenting on a topic that involves Apple fanboys and Open Source Zealots. It is a thread where the stupidest among us converge. You were just asking for down votes
(and Yes, I'm probably going to get downvoted too but it was soooo worth it)
He has more than you think. To give one example, Apple could include the FSF in the suit meaning whatever assets the FSF has could be put into jeapordy. I'm not saying that's right or fair and I'm not saying they'd even win but they could inflict some damage (legal fees alone would be an issue)
When someone's using the law as a weapon they're trying to take away what the other person values. Just because someone doesn't value money doesn't mean the law can't take away other things.