I could very easily see them closing the forum. You had to scroll to the bottom to get to the forum link, but there's a quick link to the teams right at the top of the screen. That seems to indicate that they've prioritized things and could be an indicator of a possible future move.
Personally, I think being banned is the best thing they could have done for my shop. My sales are up dramatically, and I probably wouldn't have gotten active over on Google+ otherwise. I really really like G+!