Side curtain airbag deployment

[hummerabia]

A recent trip out to the desert with a local 4wd club proved interesting as the side curtain airbags deployed when I crossed a dune ridge at an angle as opposed to square on.
I personally did not think it was a particularly harsh manoever and indeed several others had crossed before me with other vehicles without such incident. The dealer took some convincing before accepting it as a warranty job mind, its just taken them 5 weeks to fix. This has happened to 2 other H3's while on the press release day in the desert close to Dubai and I am now aware of another locally with the same issue. So that said any advice on the following would be appreciated:

1. Can the airbag module be de-activated somehow when off road?
2. Has this happened elsewhere? If so under what driving conditions?
3. Is this just an oversensitive control module, the dealer wasn't too forthcoming with info as to the fix applied, just said "it is fixed" and handed me the keys.

Apart from this, its a great truck and I wouldn't have anything else, just wish they would give you a loaner when in for repair, luckily I have been out of country for 4 of the 5 weeks it was in shop.