Will dot-com shirts/hats be allowed at the WSOP main event now?

IIRC, the ban on dot-com shirts/hats was at the request of ESPN, which thought that the FCC could consider it advertising for something illegal. However, when Fox aired the FA Cup Final on 5/11, Wigan Athletic's players were wearing shirts advertising Bet12.com. If the FCC lets Fox get away with it, will WSOP change its mind about them?

They don't want to advertise the competition, who is no longer an advertiser, and the FCC angle is just cover, so no.