I took my spoiler off last week and replaced it with a GT500 spoiler. Just work slowly, it's hard to get off. The fishing line worked fine for getting under the ends. The adhesive was in no way reusable. Get some 3m automotive double sided tape to replace it.
2013 V6 Premium - Ingot Silver
Borla Touring axle backs|Steeda CAI & tune|GT500 spoiler|32% tint
GT upper & lower grilles w/ fog lights & Starkey wiring harness