That was just the beginning, though. Considering what happened next, it looks like those beheaded Spaniards were actually the lucky ones.
Having made a reputation for himself, l'Olonnais raised a pirate fleet of eight ships and hundreds of men and proceeded to terrorize the coast of South America, sacking Spanish-ruled cities, capturing treasure ships returning to Spain and generally being a huge pain in the ass to anything Spain-related. Presumably he also killed his fair share of Portuguese sailors during this time, because really who can tell the difference?
Assuming they're all Spanish because they're having siestas is an odd point to make at 2 a.m.
However, the situation was reversed when l'Olonnais himself, returning from pillaging the coast of Venezuela, was ambushed by a much larger force of Spanish soldiers. With his pirate buddies being blown to pieces left and right, l'Olonnais narrowly managed to escape and somehow captured a few Spanish hostages along the way. The problem now was that l'Olonnais and the other survivors needed to know which way to escape so they didn't run into more Spanish ships, which they weren't in any condition to fight. What to do?