I'll tell you man when thos things blow it is not fun if you are gonna blow it to make it easier try to quarren off the area using wet bed sheets to catch that freakin power that comes out with the bag. Also BE OUT OF THE WAY they hurt like hell.
Wanted to add, if you disconnect the battery then disconnect the impact sensors in the bumper it night not blow I'm not sure on this though, if you do disconnect them be gentle, there should be a sticker on or around the fan shroud that tells you where the airbag sensors are. Hell you might be able to cover your ass by removing the fuse, sensors, and battery all together but i don't know for sure