You may be able to drag the window up with a hand on each side opposite each other and just drag, if you get what I mean…
Failing that, you have to take the door card off and push it up from below. Prop up with a piece of wood if it won't stay up.
By the crunching sound you heard, I'd say the cable has frayed and then snapped, which is what mine did. Window was closed, so not an issue.
Easy enough to fit a new regulator and plenty on eBay. Lube the cables of the new one before fitting.