I personally wouldn't take the risk tbh. No-one knows exactly why everythings lagging, server could be hacked for all we know.
Our host is working on it but it's not a simple problem.
We are well aware of the solutions out there and so are our webhosts. Please don't make assumptions about a situation you do not have enough information about to understand.I don't want to sound condescending but there are numerous preventive methods that can (and should) be deployed to protect against DDOS attacks, namely a good security policy in the first place!
I'd be a more than a little annoyed at my host for prolonging this. It might cost you more in the short term, but have you considered contracting a professional network security engineer to aid your otherwise clueless host!?