yeah... I've never experienced this problem with an escort, but I HAVE with my festiva.
The door itself moves inwards and outwards up at the top of the door by the A pillar. The window also freaks out a little. New hinges wouldn't help... the problem is due to FLEX at the top of the door.
It's just the inherent nature that our cars are pieces of crap. I know this is out of line, but if you drive a BMW or something, you never have any stupid little issues like this. We have to face the fact that fords are not feats of engineering.
If I were you, I'd check to make sure that the hinges are securely bolted to the door, and more importantly, check to make sure that the door LINES UP with the frame. If your door is sitting at a downward angle (you can tell this if you jack only the rear end of the car up and try to shut the doors, finding that it hits low), then you have to adjust the hinges so it hits the latch correctly. I think that it may have slipped slightly over the years and is allowing air to slip past the gasket.