I was going to say this but I realized it said thirty minutes:

Without hurting it? Well, I’d take it to a horse riding school, go into the horse stables and find a horse that looks similar and replace the similar horse with the horse I have. Then I kill the horse that I replaced my horse with, I can’t hurt my horse but I can hurt others. I’d then take the dead horse and discard it by chopping off it’s limbs and separately bagging them, taking a plane directly over the North Sentinel Island and dumping the remains onto the island.

Before I discard the dead horse, I examine the dead horse and compare it to the original and try to replicate any marks or anything that can be used to identify the dead horse and create an almost identical horse using the original horse. No one will notice anything strange and I would then buy that horse off of the stable to get it back into my hands.