I thought you guys were gone! Wtf is going on with this place? Off-Topic people are about to riot and I don't blame them.
The announcement was definitely transparent in not wanting any games being discussed but there own. How very totalitarian.
I am just so glad you guys are here still. Seriously, someone should set up a group before we're gone. You know it's only a matter if time. 
Yeah, that was a weird read. A part of me kinda believes and hopes they're just trolling, but I dunno - it's not April 1st. I didn't frequent the Off-Topic as much as other people, but was it really that bad? From my browsing I can't recall any giant mishaps. I've only seen this happen once on another forum, and that was mainly due to the fact that there was a significant amount of threads dedicated to trolling and attacking other users - but that forum was way smaller and the mods weren't the most professional of people. From Bioware's OP, all I got from it was that they wanted people to focus on talking about their games. If that's the case, then... Wow.
And that last part worries me, 'cause like you said it might only be a matter of time before they quarantine this thread as well.
If they don't address this issue properly, the only outcome I can see is people leaving en masse, or saying heil SS Bioware and staying. And like I've said, I was never highly involved or invested in the Off-Topic section, but I can still think its regular users' anger is fully justified and overall this just seem like a very silly call.