Whenever I hear "Nurse has to learn less is more" I cringe, and I think you're kind of speaking to the result of that message. He's probably the one player you would rather have running around rather than slowing down and thinking, and I wonder if that is how he's interpreting the message.
Nurse is unique in that his physical abilities are all he has to offer. When he's skating, hitting, shooting, etc he can actually be effective, but the trade off is he's going to f*** up once in a while. Conversely the "slow down and think" strategy causes him to not play to his physical strengths at all, while still being a disaster due to him not knowing how to play hockey.
I've long thought that you kind of just have to unleash him and accept the bad with the good. Let him run around and be high event, but with some hits and goals to our benefit along the way. Currently we are getting the worst of everything.