Just sounds like he's restless from hormones. If you have females nearby he could be picking up on the pheromones.
I would just keep an eye on him and make sure he's not dropping too much weight. I expect that he'll be pretty pushy or jumpy if you try to pick him up. That tends to be another sign of a restless, hormonal male.
Hopefully he won't push hard enough to injure his nose. Once the season winds down he should start eating again and just start settling in again.
If for any reason he starts dropping weight, becomes very lethargic or you see any suspicious stools I would get him checked out with a vet. Otherwise just keep an eye on him.