1. I'm not really familiar with their site, spent more time here and at a few others, but I would think a genuine supporter would not release such a negative article about him.
2. By writing such an article, it changes from being a support site to an attack site, giving all the more reason why RP would want to take it down and have legal recourse to do so. As another commenter pointed out, it bears his name and he is clearly the Ron Paul that it refers to.
3. If I owned that domain and Ron Paul asked me for it so I he could better promote Liberty, I would hand it over in a heartbeat. We support him and we support his message. If their goals have changed from supporting Ron Paul to simply making money off the movement, then yes, it's probably time for that domain to change hands.