Actually, you could theoretically use the onboard air demand ARB/tank set-up for this if you run the lines past the blockout valves or solenoids in the EAS. Run a t-fitting with a manual air valve into your EAS after the solenoid valve block, pull the fuses on the EAS to disable it and then open the manual valve to allow air to the bags from the auxiliary onboard system. Then use the onboard ARB to pump up the bags, close the manual valve and go.
I have no doubt it may take a tad longer with reduced PSI but even if you have to jack a wheel to assist for weight to fill the bags I believe it’s a viable solution. You’re still going to have the associated faults but I believe the ARB will raise the suspension no problem to get you off the trail. I guess it may not raise leveled but assuming a compressor or some other issue besides a blown bag is your problem, then manual air valves to the bags will work to get you off the trail and home.
You could run t-fittings to each bag line or just one to the valve block area to feed all four bags at once. Personal preference at that point I guess.
Just a theory but something I’ve been thinking about.