Apparently there are three good answers, one of which Redundant touched upon.
1. Walk through the doorway. The description says no doors, but does not say no doorways.
2. (This method works best when spoken.) Rub your right hand on the wall until it is sore. With your saw, cut the table in half. Two halves make a whole, so you climb through the hole and escape.
3. Stop imagining.