Are you referring to the blade or the wiper arm assembly? If it is the wiper arm where attaches by cowl, there is a clip underneath/bottom side that needs to be depressed before you can remove...
You can use a small blade jewlers screwdriver or an optometry (glasses) driver. You not need use alot of force..
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
The caveman way that I did it after my 67 setting for 18 years was to hook one end of a u-bolt (yes I used the old nasty one from my early 70's exhaust), under the lip of the wiper arm on the shaft, just opposite the blade arm. while holding onto the other half of the u-bolt..say a small prayer and tug parallel to the actual spined shaft coming from the gearbox. The positioning of the end of the u-bolt under the lip couneracts the torque of the blade spring...no bind...pops off! The little spring clip that is supposed to hold the thing on gives up, at least mine did...and are no worse for the wear.
It's not how fast you can go...it's how fast you can get to how fast you can go...poncho torque!
