If he wanted to protect his trademark he should have asked for the domain 5 years ago. He knew how it was being used and never tried to get it back as far as I can tell. So, really he is not taking the high road. He only spent what a few weeks negotiating before heading to legal means??? Heck back in January he wasn't even going to ask for it, he was going to use something else.
So, yes Ron Paul caused this situation himself and I think he could have spent more time trying to come up with a reasonable solution rather than running immediately to UN arbitration.