When I got home yesterday, my cleaner was still running - the system should have shut it off. I didn't think too much of it.
About 2:30 this morning, I was woken up by a pump rapidly cycling on and off. Went outside first - it was the main pump. When I went back inside to the One Touch, I could see it was actually the cleaner cycling on and off, causing the main pump to come on as well - the cleaner didn't have a chance to come on pending the "safety window" with the main pump running, I think?
Anyway... I flipped the breakers, deleted the program entry for the cleaner... and that's about as far as I could think at 2:30AM. I left the breaker to the pumps off for the day, but obviously I can't leave it like that.