You will need to pull the entire window; frame and all to repair or replace. While in Apache Junction, I had a glass company that claimed he could send the window off and it would be repaired and back in three days. THis was a few years ago and I do not know if it was successful. Contact the company that makes your window as they may warranty it if FLeetwood does not. Before Atwood bought out Creation windows I had a bad window on a three year old coach and they replaced mine at no charge. I and two friends did the labor. Good luck and if I can be of further assistance let me know.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7