Hmm... well I really thought he was wearing one of Chuck's shirts, but I wouldn't swear it so maybe...
I watched him on the Campaign field one game in prelims, and he didn't "play" like a Dynasty player either, hence why I assumed he was just wearing the top.
Perhaps Niall can elaborate as he would have had to register.
Oh.....and even if he was a Pro, its still within the rules as he would have transferred to that team for that event, he just couldn't have gone back (not that there are any more events this year)