Escape from Sire in Horde

How do you escape from sires in horde in gears 5? When you get grabbed the onscreen prompt has the B button (xbox), But so many times ive failed even when ive been hammering B as much as i can.

The sire has to be hurt by someone on your team. You can avoid being captured by rolling.

So is pressing the B button to escape futile?

It only prolongs the timer until it well… rips your head off.

It’s probably worth mashing it if your on eariler waves as (if your playing with AI bots) they can rescue you, however on later waves they become less effective at saving you