Originally Posted by Ripplewind
It sounds like he doesn't like the bit. May try riding him in just a plain old Snaffle, not to be confused with the Tom Thumb bit, which is cruel and should be outlawed.
Ripple, while the TT is certainly a poorly designed bit and one of my least favorite bits on the market, they are a long way from cruel. The only thing that could make that bit cruel is if the hands attached to the reins are cruel.
OP, have you had his teeth checked to make sure that they aren't making him dislike the bit?
As for correcting the issue, I can't really help with that. I've honestly never had a horse that would try that and I can't seem to figure out how a horse can manage it on a well-designed bit if he's being ridden correctly