His winner sparked wild scenes in the Millwall end before a large number of fans invaded the pitch at the final whistle.
While some were simply celebrating promotion, others used the opportunity to goad those remaining in the Bradford end.
"I can't talk, they are annoying me. They've ruined this for everyone," he said.
The supporters eventually left the pitch, enabling the players to climb the Wembley steps to lift the play-off trophy.