So I have a forum setup that is quickly growing and for the most part its a great community. Lunarpages has been a great host for all my projects over the years so if bandwidth became an issue I would gladly pay more etc... so thats not a problem. The problem is there is some ITG (internet tough guy) who doesn't like the entire forum (he is afraid its going to draw traffic away from his forum or something like that....

) so he is threatening to get the entire site taken down by contacting the host. He claims foul language and threats to him are what he is going to file a complaint as. He has even gone so far as to get my info from the DNS whois and call me at 4am

(I didn't respond and hung up right away) I've even sent him a loosely written cease and desist contacting me letter a lawyer in training drafted for me.
I can deal with the internet tough guy, but should I be worried that lunarpages will take down my site because he files a complaint?