Bummer man. The one on my Corsa has been perfect, I have a small rachet only about 9cm long that I usually just reach one arm under twist it and it cracks nice and easy. I should have known though with the Astra that when it wasn't enough and I had to get a 30cm bar out it wasn't going to end well even though I was being really careful.
Looks good man! I have been saying for ages I want to get a dash cam. I might just bite the bullet soon and get one for the Astra. It will also help me make sure I don't develop too much of a lead foot with it.