I get the feeling this guy wanted to get caught
MOO: if this was not an only offence, he might have realised he was building up to striking again. OK, this is a stretch, and very much JMO, but what if he wanted to be caught for the IE? He knew he couldn't stop himself, but knew he could be stopped IYSWIM. Then, nothing happened and to warped thinking, it was a sign that he should not stop?