CUT IT! I've got a SA wet tip express 150 that put too much bend in my four weight. I cut the first six feet off and it works just fine. Need less room to back-cast too.

Most important thing to remember is that you cant put it back once you cut it. I wouldn't cut more than five feet off of that thing and would start by cutting about 3 or 4 off first. Your GLX won't feel like a GLX anymore, but casting a bigger loop with those lines ain't a bad thing.