Doing so, depends on the money you want to spend. If you order a new door card from the dealer, just cut the old one out from inside the car.
There is no way to access the door opening bits from outside the car.
I'd probably spend my time disassembling the inside of the door, to try and reach the cable bracket that pulls the latch. That's really all you can do. You'll need to pull out the seat and the B-pillar trim, then get to work.