Lol, - whatever you're obviously an expert.

How much would that sunroof have to be out of alignment for the air to get underneath and pull it off? And three times? I really doubt this bloke has fitted three roofs and not checked the front alignment.

At high speed the ventilation system scoops up exponentially more air as the car accelerates; - this is transferred to the cabin. The vents in the door bottoms and rear quarters are designed to let this air out and equalise the pressure so you don't get a differential between the inside and outside of the car with the windows shut. The sunroof is quite vulnerable to this pressure because the glass isn't physically held in a track like the windows are. Plus when you're going at speed the roof of the car acts like a wing and the air pressure above the roof is lower. This is a fact. The combination of low pressure on the outside of the sunroof and high pressure on the inside can lift the roof out of the car, then the wind gets underneath it and pulls it right off. This would be compounded if the roof is not fitted correctly.

This is quite a common occurance on some cars; - check Google and see for yourself.