Yeah, I like the character, but I'm quite angry with him for that too. I can't believe he didn't bother to shut the door behind him which caused Chips to go missing, even though he was worried about being caught for sending that text to Jane. It wasn't as if they were going to set out to trace the sender immediately.
For him to confess to everything would be too big a change in the character, I think. He ran away from what he'd done when he sent the poison pen letters, after all.