I did talk to him (the BO). I was very mad that he did that. He did apologize. He was just trying to help. He has a lot of hands-on knowledge, but he can't read so he doesn't have any book-knowledge. I read a lot (maybe too much), but don't have a lot of experience with horses (just a little over 1 year). We usually balance out, but not always.
Since I don't pay for boarding, I do let him use a couple of my horses for lessons and such since 2 of mine are perfect for beginners. I did tell him, though, to make sure he asks me first in the future for anything regarding the horses.