Thanks for all the suggestions, so this is what ended up happening. Besides this forum I emailed FWC for suggestions, they said, pull hose out as far as you can, hold it with pliers, warm up the hose and pull off the spigot, pretty much what everyone was saying here. This is how I did it:
Pulled the hose out as far as was comfortable, used a vice grip to hold it in place, unscrewed hose clamp and moved it back against the vise grip and tightened it down. This gave me two insurance policies that the hose wouldn't snap back into the camper. I used a heat gun to warm the hose, twisted the spigot and it popped right off. I quickly stuck the new one on, re-clamped and it was done.
Worried that something might leak, I filled the tank and let it sit overnight, no leaks.
I do have one issue with the spigot I bought (in the photo) it turns very easily to the down position, this could be a problem on a rough road, like loosing all your water going into DV. Good news if it's a problem I just unscrew it and put a different type on.
I do wish FWC had added a little extra hose.
That's all I can think of for now, any questions let me know.