Stiff window winder/mecanism

[TDi_B5]

My drivers side window goes down smoothly, but three quarters of the way up it becomes solid and is near impossible to close. It requires so much force that I'm scared the winder or the internal mecanism will break.

I popped the door panels off to have a look and couldn't see anything a miss. Does anyone have any ideas? I'm not using the window at all at the moment but I want to get it sorted.

 

[vngtx]

its either the window has popped off the rails or the window regulator is siezing up.

 

[l33tskyline]

mine does the same. How easy is it to pop the door panels off without damaging them?