I had a similar van years ago and it was nuts spinning underneath. Sometimes they can be hidden under or behind obstructions. If it ends up being that, vice grips on the nuts underneath is the easiest way to do it by yourself. If you're certain that's not the case, then this is what I'd recommend. <br><br>Get a prybar and pry up between the bolt head and the floor of the van. As you're holding pressure like that, try to unscrew the bolt. That may keep enough pressure on whatever is holding it underneath to be able to get them the rest of the way out. <br><br>If that doesn't work, you can get a dremel tool with metal cutting blade and cut the head off of the bolt. It will take a good bit of time, but it will definitely work. Just make sure to go slow and take breaks. The bolt will get really hot and could burn the carpet if you try to do it all at once. I'd also recommend having a small cup of water to cool it off quickly if needed.