I really dont think sueing them or asking fbi (or whatever) for help will make any difference.
Bitcoins are not recognized as a currency at all, or as payment method in general. So HOW is the FBI to accept that $200 000 were stolen?
My personal view is that there are only a few scenarios that can come out of sueing linode:
(ordered by probability)
1) No case gets filed
Linode has in their agreement that they arent liable to such problems AND they gave a compensation
2) A case gets filed
Linode agrees on a somewhat higher compensation: Maybe 5yrs of free service? But nothing remotely close to $200000. Since you have lost money by lost reputation and so on. Your Income isnt just what it was before.
3) A case gets filed
Bitcoins get recognized as having value, maybe a currency. So There has to be a full compensation. At this moment Bitcoins would also get a new price peak since it would become "real"... most unlikely to happen though