I highly doubt vShare took down your entire web host. The only thing vShare could do is take down the server that your site is running on. But, not the entire host. If your host is running on a single server, then you should highly consider finding another host (as your host isn't a real host, but a cheap reseller).

Update: Just did a check. Avid hosting is just reselling server space from a server rented at The Planet.

Complains: http://www.avidhostingsucks.com/