So what happens if you do get a flat with this system?

Does the small 100 psi inner tube hold the tire bead solidly on the rim all by itself?  Or, does a guy have to worry about getting the bead re-seated with high pressure air like you do on a tubeless car tire - I've never had a tubliss or tubeless bike tire that I worked on so I just don't understand how it works.  I've plugged a tubeless car tire, but always had high pressure air to reseat the bead.  Is it just a matter of plugging a hole if needed and pumping her back up to a low pressure level and go?