Facepalm

It's fake, but that's not why. The package is blocking the door handle from turning, so it doesn't matter which way the door opens, trying to will jam the handle up on the package.

It's fake because this is the inside of the door, not the outside. Notice the lock for the deadbolt.

I was about to reply that the reason they were trapped was because the door handle was blocked by the package, not because it was holding the door shut.... but you're right, this photo was taken inside the dwelling.

(As also evidenced by the deadbolt mechanism another poster noted)