Detroit should've gotten the PI yardage and 15 more for Dez Bryant going out on the field without his helmet.
Then, on Dallas last drive, they called two def. holding to keep their drive going. On the 2nd penalty, Dallas got away with a clear hold.
I agree with you. It isn't bad officiating when the same thing happens over and over. It's corrupt. The powers that be wanted Dallas to advance, and they were given help in a close game.