window dropped into door frame?

my drivers side window has dropped into the car door. i suspect the window bracket has broken or fallen out and while attempting to raise the window probably pushed out the other bracket and consquencely it has just dropped into the door frame. i cannot quite get to window as door interior is difficult to move without permanently damaging something it seems. any help would be appreciated. my car is a 2001 Vauxhall Astra Coupe.