Art & Charlotte, Not all slide designs will damage carpet or even wood or linolium. Unfortunately it sounds like yours might not be the case. Do you have enough room over the top to clear the ceiling to run the room in 6" and then up onto wedges? This will allow you to view under the floor and see if it is a roller design and if so could a roller be broken or stuck? If you will find out the maker of the slide room mechanism and a model would be even better I might be able to help you with a solution.
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