If there is water above the floorboards; she might be gone before you get there. It's closer to 550 miles due east of Bermuda (~80deg bearing) so the best possible way would be to fly to Bermuda and then hire a salver to go retrieve it. But that is all at the discretion of the salvage company as it was when he was trying to get in to Bermuda to begin with.
For the most part I think the vessel is lost; unless it turns up off the coast of the Azores in a few months.
Sorry to hear this story; but it does serve as a reminder that the devil is in the details when it comes to going out across oceans and into unknown ports.