Do not use "Vasaline". it will attract dirt, and may degrade the "fuzzy" stuff. The material to use is the "liquid Rollers" by Mary Kate. There are any number of other dry silicone sprays.
At this point, I would soak the strips with dawn and perhaps a ZEP degreaser to get the Vasaline out and free up any dirt. Pressure washing can be used, but it must be used judiciously to avoid damage to the track etc. I just use the hose with a fine nozzle on it. Also be sure that all of the drains are working--they have a small metal piece riveted over the outside. You may need to work a piece of trimmer "string" thru them.
I carry a very small pry bar to get "stuck" windows started. Pry between the frame and the metal of the handle, very gently. I would dry and push it forward first--you might even use some light taps with a rubber mallet, transmitting the light blow with round punch. Just very gently in any of these. You don't want to damage the glass, frame or the handle. One of the folks on our recent Tennessee river cruise had this problem. The small pry bar solved it in about 30 seconds.
After the window is back, then get in there with a toothbrush, and soap (Dawn) and warm water. Get the fuzzy stuff clean. It can be replaced--but in most boats it can be rehabbed.