Getting back to you on the meds for ear vasculitis. Both Katie and Sam's dog, Mo, were on pentoxifylline. Katie was also on tacrolinus ointment and at one point Mo was on protopic. I would suggest taking these drug names to your vet and consulting with him/her.
Both Sam and I noticed significant improvement in our dogs' ears when we put them on a wheat free diet. I went to a potato and duck formula, and when Katie's ears improved, suggested it to Sam. He did the same and said Mo's ears improved greatly. Mo's condition was worse than Katie's in the beginning. Both dogs are in remission -- Katie has not had a lesion in over a year. It took Mo a little longer to heal, but he is now free of lesions also.
Their symptoms were lesions on the ear which did not seem to itch. Both dogs lost some of their ear margins. Katie was lucky and only lost a small piece from the tip of one ear.
I hope this helps you and any others who have this problem. Good luck!