Make sure to check changelogs for any new changes!
There are possibly many ways to escape the Progressiverooms, but since we have discovered some we shall list them here.
Exiting Level 53 for the first time has a 1% chance to return you to Reality, however if you return back and try again, you will no longer be able to have the chance to return.
0.000075% when you enter a glass door in Level 70.
If you are lucky, you can ask Owen to go back, but only 2 per day so be fast!