Hi and welcome to STT!!!!
sounds like you've got a bit of a challenge there. Can you not get into the driver's side, or is there a load of stuff in the way? I wouldn't smash any glass - but if you can get the car out, you may be able to get an auto locksmith to take a look. However, if you have the key, there should be a key blade within it, that should at least allow you to unlock and open the driver's door (once you can get to it).
Anyway, if you try and pull the car out as is, it will drag on the tyres - not an issue really as I suspect they would all be so flatspotted as to need replacing anyway. I suspect your brakes would be siezed too, but again, if getting the car running and back on the road later, that is something that could be sorted.
The danger if pulling the car out as is, is that it could drift to one side and hit the wall.
One thing you could try, if you can get round to the front of the car (and the back) is jack it up, and if you can get some GoJacks (wheel dollies), you could drop each of the wheels on one of them, and potentially push (or pull) the car out very carefully.
In terms of wheel dollies, I mean something like this:
https://www.sgs-engineering.com/catalog/product/view/id/2498/s/wd4000-450kg-wheel-dollies-set-of-four/?msclkid=7c7c8e289c8515bbccefeb70406fe0e1&utm_source=bing&utm_medium=cpc&utm_campaign=Bing_Shopping_SGS&utm_term=4581733690864288&utm_content=SGSHopefully some of the other fine members on here can also offer some suggestions.
How old is the Saab, and whats sort of condition is it in?