If your question is: what would happen if a an aircraft came aboard with one of the wires still payed out from the previous aircraft? it would be bad... Not trying to be a jerk, but do not see why that would be really bad? What if you caught the wire that was still payed out?
Only one of two things could happen...either the arresting cable would snap; or, the tailhook assembly would fail (hook point break or mounting assy failure). Either a potential disaster for flight deck personnel/flight crew.
In one instance ashore, an A-4B in my Squadron, inadvertently engaged the airfield "short-field" arresting gear (early chain type) in the wrong direction, and it ripped his tailhook assy out by the roots, with severed hydraulic lines spewing fluid like a NYC Fireboat! Luckily, he got it stopped on the runway.
BzB