The thought running through passengers minds, especially Sun readers probably went, whats that coming from the wings? Must be fuel, hey thats how Concorde turned into a flaming torch, panic everybody.
I agree with JW411 Had one of the Pilots appeared in the cabin and had a look and said "There's a fuel venting out let there designed to SAFELY vent fuel in the event of a sight overload, then all might have been well. Otherwise people will assume they are just guessing, as at to the cause.