SCUMM: The steel security door in Maniac Mansion

[GermanTribun]

In order to remove the copy protection in Maniac Mansion, the interpreter has it always open and it also can't be closed (but the keypad can still be used). That however does sadly also remove the Easter Egg when reading the sign with Bernard (and reading the sign in general). Can't the door be programmed that it just opens and closes like a normal door without the character automatically using the keypad, thus still neutralizing the copy protection? (They did that on the NES - something ScummVM doesn't replicate).