Window removal

I'm working with a 4-door 1967 Dodge Dart 270 (no A/C). I'm trying to get the window glass out of the front doors. Per the FSM, I've already removed the nut and screw holding the front track in place. I've also removed the vent glass and the mechanism for rolling the window up and down.

At this point the FSM stops being helpful. As best as I can figure, the track needs to be removed to get the glass out. However, I can't figure out for the life of me how to remove the track.

Any pointers on either (a) how to remove the track or (b) how to remove the glass without removing the track? Thanks in advance!