Does your car have a access panel through the rear seat. If so, maybe next time you could have a kid or something crawl in there and maybe pull the cord to open it if it has one or something. for the many years I have been on here, I don't recall that many people saying their trunks are stuck.
Glad you got it open though. Maybe spray it down real good with some sort of lubricant!
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charlie
black 98 gtp sedan, 222,000 and running great with the new used tranny!
zzp 3" d/p aluminized
dhp 1.0