Yes, as long as you can access DFDM from the current system.
Go into a version of MAS with a known Administrator Password and go to DFDM, MAS_SYSTEM, SY_SYSTEM.M4T. Bring up 21 - Admin Password$, edit, copy the field.
Go into the version you want to override, same place and past it in. Now login to MAS as Administrator with your known password.
Works for me all the time. Good luck.