I hearthed home while on a wild horse i fed a clover to. He got stuck in my hearth. My hearth was in a timber house, in the corner, on the first floor. I couldn't move while on him, and when i got off he couldn't path off either.
So i grabbed a couple dreams and split two blocks of wood, to move my hearth to one spot so he could get out, then move it back.
I hearthed out of reflex, and the horse disappeared.