If it ever were the case that Google would lock you out entirely, that is no longer the policy (nor has it been for a long time). A lot of the early reports that people were getting locked out of Google were centered around one person, who claimed to have been locked out from Google over his name, but it turned out the lockout was because he'd uploaded questionable images to his account (I can't find a link at the moment, but here is Matt Cutts alluding to it: https://plus.sandbox.google.com/u/1/+MattCutts/posts/NNJduMF...).

The policy, for the record, is here (see the bottom of the page): http://support.google.com/plus/bin/answer.py?hl=en&answe...