[JohnB]

That has to be one of the worst I have seen yet.
I have seen some with many surface delams, where it got between the first layer of glass, and the second.
Was there water in these? Did the boat have bottom paint on it, or spend a lot of time in the water/at the dock?

As for how to fix it, the snap mold method described above seems like the only thing I could think of. Make sure you use a lot of pva release agent.