That's what I got as well. That change, along with others like RS/YAP2 leaving, were in the works for some time.
The sad part is that knowing CA was down temporarily they didn't hold off closing the TW forum until say THIS weekend as a courtesy to the displaced with dual membership on both sites to give them someplace to go other than TK's site. My guess is a lot of outcry changed their minds over it, and they relented just as we got back up...but it really looks dodgy from the outside, like they did it deliberately. If SimHQ was a massive corporation, I'd give it less thought, but it's not that much bigger staff-wise, just active posters-wise, so there's no reason they couldn't have waited a week to help.