Chelldon decided that they always had worked like dominoes and therefore the best way to take them down was, logically, to knock them over with something like another turret or a cube or, in theory, a very mouthy little core. Chelldon wasn't overly proud of what he did next but it worked.

He shot a portal just across from the turrets, threw Tyler through and much like bowling, he spun into all four surrounding them. Ha! Strike.

Chelldon, of course, used the portals to retrieve Tyler before he got splattered.

Turning to Wheatley, he gave him an innocent expression. "No cake?"