530i Rear bumper

[Turbin]

I have a towbar fitted to my 530i & want rid!!
It is a Witter towbar & has various balls etc...
I have removed what is visible & now want to remove the bracket itself.
Can anybody let me know how to remove the bumper & if I will need to purchase any fittings.
I have already got the pull-out section for the centre.
Pictures would be appreciated if you have any!!

If anybody wants to buy the towbar when removed let me know - otherwise it's eBay time!

First post so please be gentle.

[Interactive]

Turbin: I can't help with the removal information but I would be interested in more details about this towbar. I didn't know that one was made for the 530. What year is your car? Do they make any bike rack attachments (or a standard 2" receiver) for these towbars? Do you have any pictures of the bracket BEFORE you remove it?