I got an easier way.
Let it sit in the nice hot sun, then use a big flat screwdriver or something to pry with and start at teh back of the window frame, and pull it out. It will come right out (i've done it a few times).
If you really want, (or it's cold outside) cut the butyl rubber glue on teh inside with a knife before prying, but i did not see the need.
Oh yeah watch out it weighs 20lbs so u dont want to drop it...
(also make sure to take off all interior moulding).

89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim