Just twist the wires together, so if somebody hooks it up in the future it trips the breaker or burns down the house. So they know they shouldn't have hooked it up.
I know this place is pretty frequented, so announcing this here should do some benefit - your Town Hall Chat is happening today, one hour after we shift into the Election Phase (17:00 EDT, 21:00 UTC).
The easiest solution is to get a small child that doesn't mind spinning around inside of the dryer to hold this in place while you're doing the laundry. :D
@TheEvilGreebo Hey stranger! I've been largely absent myself, work is taking up 120% of my time lately, way too many DIY projects building up around the house.
Define:IIRC - I read this on the internet somewhere, but I don't want to cite the source (probably because the source is about.com, yahoo answers, eHow, etc.)