Surprised this thread has got so much attention!
Let's, for a moment, use something called "common sense", so, the rug pushes them onto the grass, it gets stuck, can't get out people on here are suggesting the CA should open the taps and "have a go" as there's "no harm in trying!" LUDICROUS!
So, imagine this, said CA opens the taps, a/c jumps the mud/grass, catapults forward at a rate of knots, smashes through the terminal glass and before he knows he's ordering a latte and croissant!
I'm sure management, the lessors, gatwick airport or Mr Insurance would mind because "he was having a go, and there was no harm in trying!"
Possibly the worst statement I've ever read on this site!