luna admitted to deleting one thread, but you said she was deleting threadS she didn't like...
Well said. Deleting random threads won't change anything. Besides that, this is a passing bout of anger on their part, and will likely lead nowhere. Even if they do get us taken down, it won't be the first time. We have 1.0 to go back to, until Luna gets us up and running again. Hardly the end of the world.
I think the possibility of them reporting us to our host is similar to our communities possibility of electing more moderators a little while ago. It's a momentary thing coming from a few members of their community, and with time it's momentum will hopefully die off. That said, if they do wind up reporting our site somehow violating our host's ToS, deleting stuff wouldn't help, since the person making the threads in question likely screenshotted them once they made them. And even if you did delete them, the sad fact is that there is not even the remotest possibility that you could delete all the fucked up shit on this site before they could find a single thing. It's been around to long, and born the brunt of some truly painful content.
EDIT: If it's MP who had you delete the stuff, if possible could you see that he reads this post? I know he's usually busy, but if could spare a moment it would be great :)