Uhhh, the nuke option is BAD. The oil is at 35000 psi. Fracturing the sea floor around and under the well could potentially release the entire reservoir in short order. It’s akin to using sticks of dynamite to ‘plug’ a leaking valve on a LNG tank.
The oil is not at 35,000 psi. If it is a normal pressured reservoir (common in the Gulf), it is .465 psi/ft or 7900 psi of bottom hole pressure. If it is geopressured, it would be up to 17,000 psi.