Thanks everybody great tips. You were right--push out the pins of the rivets. What a pain to track those down!
![](https://i.imgur.com/YC6hJ1r.jpg)
This handy tool in the toolkit fit over the 3/16 (IIRC) allen wrench end to give much-needed leverage to get the spoiler off.
![](https://i.imgur.com/9sZVcNb.jpg)
Looking much better, thank you.
But if you'll indulge me one more question--since the repair my spoiler makes a clunk when it goes down and I have to push it down to completely seat it--about a quarter-inch.
I have video:
I, uh, can't remember if it made that "chunk" noise when it went down--and it definitely didn't need pushing down again.
This is refractory to silicone spray. I think it might have gotten misaligned when I took off the allen bolts? But I'd really rather not disassemble it again unless I have to.