Neutering/Spaying Risks of neuter surgery with head tilt?

I'm adopting a skinny pig in the next few days. He has permanent head tilt from an ear infection that took him a long time to get over, but he's healthy now otherwise. Are there any surgical risks for pigs with head tilt? I'd like to neuter him and get him a girlfriend once he's put on some weight.

I called my vet and he said that there were no risks "that he knew of," but I thought I'd get a second opinion here.