I had my suspicions already but,

I knew our officer wasn't gonna turn out to be a dirt bag (despite his questionable choices concerning his ex and how easily he let him push him down) that genuinely left the kid that supposably died (which I am on the edge of believe is false but I'll just say he actually is for now) and fled when now we have the backstory of him actually being a popo that goes beyond his duty and checked up on the kid cuz he was worried which already makes him more than a decent person. And with that brick to the head - he was definitely not in his right mind, plus I'm starting to think he didn't actually flee and maybe was moved since he still can't recall anything afterwards 8 years later.