honda civic 1998 lx rear windshield window tint removal

The tint on my 1998 civic lx finally bubbled after 8 years. Only on the rear window. The other windows are great. I decided to remove it and have done a fairly nice job- windex and removed most of the glue.
However I am stumped as to how to remove the tint right behind the third brake light. and even if I remove it, how do I scrub it down to get the glue of 1- Can I remove the rear windshield- do the cleaning and reinstall easily? or 2- remove the brake housing and then clean?
any suggestions would be appreciated,

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