Actually no. If you play it at 0.25 speed you can see that he was holding the guitars weight entirely with the whammy bar and it slips out of his hand, when the guitar hits his thigh, you can then see the left strap come off. I am a big fan of Dragonforce, not shitting on him or anything, stuff happens.
I heard somewhere in an interview that it's a risky move where he keeps that guitar hanging on a single string and hopes it doesn't break. So yeah it does happens in some shows.
