[PGR88]

The leader of the team, George Dasch, bribed the suspicious Cullen, and he accepted the money, promising to keep quiet. However, as soon as he passed safely back into the fog, he sprinted the two miles back to the Coast Guard station and informed his superiors of his discovery.

I wouldn't call that a "bribe" - rather, a smart ruse by Cullen to avoid being murdered on the spot, and get away to expose the plot.

[hoosierham]

The Nazi saboteurs were naive and stupid.

The obvious choices were surrender immediately or kill the Coastie.

All hope of successful mission ended when they were discovered.

Best option would have been immediately surrendering.