Stewards at Forest Green ejected a Grimsby Town fan from the ground before kick off – apparently for playing with an inflatable football.
Several people – including at least six stewards were seen to physically eject the man from the ground, and one appeared to have him in a headlock.
One fan said the move had angered supporters.
Stadium manager Dane Vince, son of the club’s multi-millionnaire owner Dale Vince, said the club would not be making a comment.
It is understood the stewards are employed by an agency and not the club.