Are you sure it wasn't the ex-housekeeper's husband?
[/quote]
Nobody's allowed to mess with my
Bad Ronald memories.
There's a lot of Freudian stuff going on. His mother keeps him safe and secluded in a hidden place away from people, where he's totally dependent upon her. When mom is no longer able to protect him, he bursts into the world through the wall in a panic. It needs to be mother and son.
It's a pretty effective scene when Ronald forgets to replace a peephole, so one of the new residents spots an odd light coming from a hole in the wall, walks over and just as she sticks her eye to the hole to look in, Ronald puts his eye there from the other side. And then Ronald crashes through the wall. At least that's how I remember it going down.
I love the eyeball appearing there, so creepily you know there's someone bizarrely in the wall. Nicely unexpected. It would be anti-climactic just to have her look in and see that there's a room in there or see Ronald's possessions.