GARAGE MISHAP - NEED HELP!

First of all, the mishap is relatively minor, but the help is very necessary, and the appreciation for help is monumental! 

For reasons unknown, something decided to fall off a top shelf in my garage and land on my beloved Yammie, snapping the thin plastic part.  Things could have been much worse indeed, but really, I didn't need this.  In any event the piece that broke is one of the thin plastic wings, not surrounding the tail light (of which I kicked one once and snapped it!) but the piece right along side the mini backrest and strap on the stock seat.  Perhaps if it weren't so FRIGID the plastic would have flexed instead of snapping.  Please refer to photos and even the FZ-10 pic on top of the page, except that mine is on the clutch and shift lever side, NOT the brake side, if that makes a difference.

First thing I did was remove the seat for what I thought would be a 5 minute job.  Then I proceeded to remove one standard bolt, one hex bolt, and a Philips head screw.  From underneath I am looking at plastic pop rivets which I am not certain need to be removed.

I am at my wit's end.  Whoever designed this thing is either a genius, insane, or both, since its proper removal eludes me ENTIRELY.  I was toying with the idea of removing the crank shaft and associated components along with the tranny for starters, but I figured I'd better ask here first.

Any and all assistance would be GREATLY APPRECIATED!!!!