As clever as AC (and him mum) thought he was, he's really been pretty stupid when you look at all the facts. For his age, he would have known about DNA/semen evidence on a body and the damning CCTV in his own house. OK, i think it's pretty obvious he didn't go out that night with murder in mind and when things took a twist his brain just melted (alchol and drugs ofcourse would have played a part).
He could have hidden the body in a place MUCH harder to find (to give him time to construst his perfect alibi/wipe any CCTV/clothing evidence etc). If that is him carrying the body past the other CCTV recording then he could've surely just as easily taken it out to sea and hoped that the tide took it and washed away any evidence.
I am not a psychologist and cannot claim to understand how different people's brains work but it's as if he wanted to bask in the glory of this crime. He wanted the body to be found quickly. He wanted it to display the full horror of his awful crimes. I'd go as far as saying he wanted to be the prime suspect, the centre of attention, have his day in court. Mummy seems to have always been able to get him off-the-hook in the past. After seeing the Lyndsey Stewart story it made me think "this guy thinks he can talk his way out of anything". Maybe he genuinely thought the jury would buy his story about Toni and he would walk out that court with a big smile on his face ..."I'm so smart..I've beaten the system AGAIN"..all IMO of course
