E-cam I seriously doubt the likelihood of either of your propositions. The rudder/stabiliser is designed to be used to keep the aeroplane straight if an engine fails or separates, and should therefore be up to the job.
If the engine mountings can secure the engine at full power, then a bit of yaw is highly unlikely to cause it to separate.
As both John Farley and I have said, we will have to wait.
John - I loved that photo of you hovering a Harrier with the gear up - it looked really smooth. Did you ever work with Mike Laughlin, RAF TP on the Harrier develpoment? He flew the P1127 quite a bit and said it scared the you-know-what out of him!