The MacBook Pro's key stick issue is extremely annoying when it happens, but it's easy to remove a key to blow dust out by using a guitar pick to pry on the side nearest the screen:
However the stress/weak points on the spacebar are quite different and you're more likely, as I did, to lift the entire butterfly mechanism out. You will not get this back in again. It's $700 to get the thing fixed at Apple but you can buy replacement keys for $100 per shot online.
Don't follow YouTube repair videos they are not comprehensive repair guides. Just use AppleCare and make Apple pay for their own mistakes.