I was there with him, Were playing for a little while on NA-1 during the early morning(Around 4:30 AM, EST.) Troy heads off to get new armor and is suddenly banned.
I asked the admins on the server if they had done anything, and they said that they've not done anything, there was no message on the server, and the ban is apparently not a global ban as he can enter EU servers just fine.
Just askin' to see what's going on here.
EDIT: Heard from Rangerbob what happened, Thanks to Arrowiane for being on the IRC and for Rangerbob for giving us a quick response. Kudos. Feel free to close this or whatever later.