Lift away stuck on wrong side of stick.

Hi all, I purchased a Shark cordless vacuum cleaner,  model IC160UK. I took the lift away part off to empty the filter, then my wife decided to put it back on, and she put it on back to front. It is now wedged in, the release button wont release it and I don't want to force it off. Does anybody have a fix or is it looking like having to pay for repairs as we broke it?

Thanks in advance for any help

Richard