Ivan the end of Castro?

At category 5 (160 mph now with higher gusts) the amount of destructive power in Ivan exceeds Andrew, and it's headed straight for Havanna. This hurricane apparantly destroyed 80% of the housing in Grenada, and now it's a lot more powerful. Think of the amount of force involved in 160 mph (gusting higher) wind; at the current track, it will spare the marine base at Guantanamo.

If it hits Havanna at this force, aging and intransigent Castro may be destabilized. I want to start the wild speculation: will the neo-cons take the opportunity to invade, or at the very least, use a massive disaster as a pretext to take Castro down through initimidation in the midst of humanitarian efforts? The Floridian ex-fascists will likely be screaming for intervention of some kind, and would think nothing of manipulating humanitarian efforts. If something happens, what are the chances for modern democracy, or a modern rightist police state, in Cuba?