The A.I programmed to win sometimes...?

As I understand it the game creates a huge pillar of random tiles when a match starts and not each tile when it drops. So the tiles are already determined, we just can't see them (sometimes I think the AI can, though). When I try to cheese a quest objective in DDQ wave node and want to quit a match I can't when a cascade is active on my turn that finally will down the last opponent.