GO85HITE,
I agree, it is an unlikely explanation and it is probable that the reason Gibson went in will never be known. All that is known for certain is that he was seen descending under what seemed to be control, no flak was seen, the two crew could be seen silhoutted against what appeared to be a fire in the cockpit.
Neither Warwick or Gibson were familiar with the Mosquito aircraft having not carried out a conversion course or been officially checked out on type.
BTW
Like the handle!