It's hard to say for certain, but it did look like he was playing. The bit where he was being interviewed and he thought he'd lost did appear to be akin to a tee-totaller pretending to be drunk.

I'm not saying he was acting, I guess only he knows for sure -the punch didn't seem to catch him flush, and he'd been hit with better shots in the fight, but I will accept that he wasn't ready for it.

I did like the balls of Abrahams in his interview though