Heres a link to a video as to how to install one, reverse and you should be set. The best thing appears to be to take it off with the slideout in and then reinstall.
You will have to take the screws that hold the metal cover in place at the MH, drill out the rivet, remove the screws that hold the rod arms into their sleeves and then slide the topper out the end. Look at the video and you will see.
It would appear that you could also just remove the brackets that are on the slide. I would be careful not to strip the holes and to use a good sealer when reinstalling.