The problem with removing it and replacing it with something else or selling it is going to be the compression fitting. That is what the TM bolts into, so if you sell it, are you going to sell it with the fittings? If so, you'll have to replace them, but honestly, I don't know from where. I would think TM may sell them separately, and I figure other bar-ends will screw into them. FWIW, I saved my original fittings so I can press them back in if the TM and me don't get along.
The person that installed them should have used blue Loctite, so they should just break loose with a little pressure and no heat. Should...