I'm real sorry to hear about this. The good news is that I did read on one of the websites (iRV2, PUX, GLPUC, alt.rv.pop-up-trailers, or Pop Up Times) that a pop-up floor was replaced at the factory and the owner reported that trailer was returned better than new. The description I read of the floor replacement process was that the trailer was put through the assembly line backwards to disassemble it, then with the new floor installed, the trailer was reassembled.
About the dealer providing a replacement travel trailer...let's put this in perspective. The franchise dealer is not in control of how long the factory keeps your trailer. If you approach the dealer, I hope you have a great relationship with him and you might get a loaner when you need it. However since you live relatively close to Somerset, maybe a personal visit checking on the progress might be in order?
2009 Palomino Stampede S195 SD (Hybrid TT)
2010 Ford E-350 Super Duty XLT Extended
" for more information of about our worldwide adventures