"You must basically get a 13mm regular wrench, hold that nut in place, then get a ratchet (or a small 3/8 in drive impact gun which i used to take off all bolts so as to prevent stripping or breaking bolts) with about a 6-9 in extension with a 13 mm socket and fit it through the lower bar of the suspension and unbolt from there."
Wow! I don't know why I didn't see the obvious yesterday.........