freeze it, the cap will come off rather forcefully but should stay intact.

Put the whole container into the freezer. Freeze it solid, the cap will come off rather forcefully but should stay intact.

You might have better luck with different positions of the bottle. Try with the top up, down, and horizontal to move the airspace to different positions to affect the pressure by the expanding liquid.

Reduce the cleanup by putting the whole thing inside a roasting pan to catch the contents. Cover the glass with a dish cloth or small towel in case it bursts.