I have found that when interviewing people after they have been caught doing something wrong they will say things like "I didn't mean to do that" when in reality they mean "Now that I have been caught, I regret what I have done." You can do things intentionally, recklessly, with negligence, or knowingly. Without knowing how one turns on those sprayers I cannot say 100% but I would guess that action was done intentionally. The failure to yield was likely reckless behavior.