Mix the pretzel crumbs, melted butter and granulated sugar and press them firmly into a 9-inch pie plate; refrigerate for 20 minutes.
Beat the cream cheese and powdered sugar until smooth, beat 1 cup cream with the vanilla to stiff peaks, and fold it into the cream cheese.
Spread the cream mixture over the crust all the way to the edge and refrigerate for 20 minutes.
Dissolve the gelatin in the boiling water, stir in the cold water, and refrigerate for 25 minutes until cool and slightly thickened.
Arrange the strawberries over the cream layer, pour over the gelatin, and refrigerate for at least 5 hours.
Beat the remaining 1 cup cream to soft peaks and spoon a modest layer over the set pie before slicing.