My Hotpoint Aquarius 1000 de luxe wm22 jumps!?

Today is the first time i have used the machine since Monday, when Dee Jay advised me to clean my filter http://www.howtomendit.com/answers.php?id=29240.
I put the things in on a 40 degree wash, and gave it a repeat of the spin it had just done afterwards to spin out the excess water. Unfortunately the machine still jumps across the kitchen, and now it's holding my stuff hostage! I press the button, and i feel the click as something releases, but something else holds on.
Please help!
TIA