The ride is called "Air" (video below).

Just as the ride set to depart, we heard a loud hissing noise and the leg restraints flew open. Needless to say everyone on it (about 30 people) started to panic and shout.

I was right at the front, and I feel bad now since I was pretty harsh to the guy operating it..."DON'T LET IT SET OFF OR I WILL COME BACK HERE AND F***ING KILL YOU MATE" were my exact words I think...it was trying to depart without us being secured properly and I was crapping my pants!!! XD