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He he :) It made me laugh too :) I make make up all kinds of exciting reasons why (said with a demonic glint in eye) ;)
It's a frame with a middle divider with two lots of slats, one on each side but although they are fixed to each other they're not fixed to the bed and slip through (taking me with them lol).
The landlord's handywoman had appeared to fix it yesterday but she had just put the slats back and not fixed them to the bed, hence the collapse, but landlord just texted me to say she has a plan :)
I am trying to see the lift as a positive thing, burning off some more weightwatchers points :)