how to remove broken grommet from recumbent seat (without damaging mesh)?
After looking at half dozen videos the easiest means seems to be a Dremel or highspeed die grinder. Using a small diameter stone or steel burr make repeated passes around the inside of the grommet hole. Take care to not let the grommet to get hot enough to melt or burn the fabric. It is not necessary to grind all the way through, just remove enough material weaken the crimp.