All you'd have to do is to damage the propeller. A jet engine would probably run until there is no more fuel. I don't know how they did it, but, with the right incentive, any reasonably clever engineer would manage to do it.
It's a very unfortunate mistake to underestimate your opponents enough to give them your secret stealth drone.
It's a very unfortunate mistake to underestimate your opponents enough to give them your secret stealth drone.