I would consider other people and motives for shutting down your website, Granted, I have no idea what your website contains nor the primary focus of your website. However, it's far more likely that it was an error on behalf of your web hosting provider, than the federal government trying to eliminate information.
It could also be an angry ex-girlfriend or wife. It could be targeted towards you, a partner, associate or maybe indirectly targeted to somebody that worked on your website.
In short, there are many other logical explanations other than the men in black.
If the government wanted to target websites, related to Bigfoot, this forum would be gone, along with the BFRO, just to name a couple.