Schizophrenics are capable of a pretty fantastic amount of planning, depending on what the delusion is leading them to do.
A friend of mine who is a campus cop recently arrested a man who had snuck into a classroom to use a professor's computer. Upon further questioning he revealed he was being stalked by his family and the government and had been emailing Lindsay Graham from different computers to get assistance while avoiding being tracked.
You just never know.
Which is why I didn't categorically state that he wasn't crazy because I know most crazy people are rational
within their crazy worldview. It's just a matter of understanding the incentives.
I was trying to point out that he clearly knew people would have a problem with him hitting her. Which, given his claim that he saw it in a movie and wanted to see what it was like means he knew (and knows) it was wrong to do so.