"The sprocket's going forwards, theoretically tightening the nut during movement because of the thread direction, don't panic too much, the new one ain't going anywhere in a hurry!!! "
This may be a daft question - but is the front sprocket nut a left hand tread ie tightens anti clockwise?
if it is it will explain why I cant get my one off!!
"Don't Die with Fun in the Bank!"