Butler, hold! Ezrael, I need five seconds of concentration. Cover me.
Jace stops moving, and while he doesn't lower his weapon, he clearly isn't focusing on waving it around. He hopes Ezrael blasts anything that gets ideas, but he's too busy with spellcasting to see.
If successful, a powerful wall of gale-force winds is emitted from his hands, first tearing through the space in front of him and hopefully clearing the aisle between them and the exit of its current occupants.

Ahem. Now we run for it.