Of course.
I do not know the Falcon 7x specifically, but other aircraft I flown have a trim disconnect switch, I would be surprised if the 7x did not have one.
Of course if you are in normal operations, quite relaxed, descending on autopilot, a trim runaway can go a long way before you are able to react to it.
Is different if you are watching it because it might happen.
And since Dassault grounded the aircraft because of the problem, I do not think they would allow ferry flight lightly(hey, it's only pilots on board
). If they believed that the aircraft could kill you at any time they would not allow any flight. And I'm also pretty sure that they issued restrictions and procedures for the flight to be conducted safely.
Personally I would have absolutely no problems to ferry such aircraft.