Sounds like your guide came out of the 'sash.' Bring the window about 3/4 the way down [or wherever the window is the MOST exposed closest to the front of the car. Grab ahold of the glass in that exposed area. And Pull towards the rear of the car. You will hear a VERY obvious click.
The symptoms you describe are exactly what I had to deal with when I was trying to get the glass out. Also make sure all your weather-stripping is in good order. The glass rides in that, so that is required for proper operation.
'89 SSE - GX3 -190k, 155k on body - Back for another ride.