Player mucks cards then pulls them out to hit boat

[Drew16]

It was heads up, smaller stack has QQ, other guy has A8, flop is 88J. QQ goes all in and is quickly called by A8. QQ says "do you have an 8", the other guy quickly says yes and QQ throws his cards in the muck. Dealer finishes the hand and when Q comes on turn small stack quickly retrieves his cards. Another Q comes on river. QQ starts raking the pot and other guy says nothing. WTF?