"Luffy!" Jack's hand automatically flies out, but he is of course too far away to reach Luffy. No, there's only one way he can help, and so can everyone else. "Better start casting!"

Which, for Jack, involves starting to move in a dance as if he had arms around a partner, but the Slow Dance should affect the Galleon in the way that everyone was hoping.

Meanwhile he can only watch as their self-proclaimed Captain does something foolhardy and rash. "Yes, Gwen, I know how ironic this moment is, shut up," muttered under his breath as he keeps moving.