I also work for a rural 911 service. We have at least a 30 minute wait for mutual aid. We had a MVA with 3 adult patients, one of which I deemed critical. We took out the stretcher mounts, tossed 2 BBs on the floor, one on the bench. EMERGENCY situations require different methods than nonemergency IFT. I had my partner drive as we were down a long,curvy, gravel road. I had a first responder assist me in the back. Extra pair of eyes/hands is always good, especially if you trust the brain behind them. Only time I've ever done that but I saw no alternative at the time. My medical director backed my desicion.
When you work rural you have to sometimes do things out of the box. You have to weigh risk Vs. benefit.