I think that demolish room in player city should also remove the exit to the
room. If it already does, then it bugs slightly...

demolish room from east
->This will permanently remove the room and contents of it from east of you.
Do you wish to continue? ([N]/[y])

look
->...Obvious exits are: e and s.

east
->A strong force stops you from going east.

demolish exit from east
->This room doesn't have exit east.


-Bombur