Just did a search of his ID. Surprisingly this came up:
Name Last Used
Communist Thu Jan 05, 2012 4:01 am
Rusanton99 Sun Dec 11, 2011 12:29 am
rusanton99 Sun Apr 03, 2011 3:29 am
Although the registry date of rusanton's forum account might disprove this next theory, I think there is a chance that this might have been Battlebrain.
However, if you go back in the post history a little bit, there are a few massive time lapses between posts on that account, which could indicate the account might have been one abandoned by a long-gone user and then given to someone else.