In my mind burroughs coming back means one of two things. 1) His wife is annoying the hell out of him and he needs to get out of the house, 2) he's done the appropriate amount of soul searching and is highly motivated.
The obvious retort would be that he was obviously as motivated when marstellar beat him last time, but I'm not sure thats the case. He was already locked on for last cycle, the decision to come back now, when a failed comeback could tarnish his legacy more than adding another world gold, makes me think he's doing it for the right reasons, and sense he's one of the best competitors we've ever had I assume he'll win.