Now that article is interesting, if only to show that there is no lateral thinking going on.
If the RQ was jammed then it should pick up the emergency mission and fly back until, either:
1. It re-establishes comms with the SAT link (you wouldn't have to go far from your jamming source to vastly reduce the effect of the jammer as free space path loss of signals is logarithmic over distance (in dB it is 20Log(distance)+20log(frequency)+32.45)) - it's energy is dispersed under an inverse square law.
2. It establishes link with a LOS link (if it has one?).
Now, if the jammer shown in the article fried the avionics (and it would need a lot of power to do that) then this is not just a threat to remotely piloted aircraft, but also to manned aviation. Why? Because just about every aircraft flying in the military today has digital fuel control modules, engine management, fly-by-wire, communications/datalinks, RADARs and other avionics. So if the RQ became unflyable due to its kit getting fried by this supposed "wonder weapon" then we had best wheel out the Spitfires, Hurricanes and Lancaster from BBMF! However, as seen above to fry avionics over long distances would require huge amounts of power concentrated right on the SAT dish - unlikely from the ground also, due to geometry.
So I reckon it had an engine failure, the AD Cdr that "claimed it" got lucky and the Iranians now have a piece equipment that the US would rather they did not.
LJ