Doh, so I went over a bump the other day, lots of noise, had to get home so limped home in 1st with lots of nasty noises coming from front corner. Finally got round to getting the wheel off and investigating...

Basically, the shaft seems to have popped out of the box, and got jammed in a gap in front of the box...

I figure I'll have to disconnect it from the wheel to remove it? How easy is doing that and what tools will I need.