After some kind of freakish group dance routine that’s definitely going to cause some nightmares, it was time to find out which two contestants would be sent home on ”So You Think You Can Dance?” on Thursday. Host Cat Deeley handled the duties of introducing guest judge Adam Shankman, who again joined regulars Mary Murphy and Nigel Lythgoe. Cat said it was time to get right to business and introduced the first three couples that would get news on whether they were still in the competition for $250,000 and a chance to perform in Las Vegas. The bottom three couples would perform solo routines before the judges decide which guy and which girl were out.