I got this from a trusted source:
Yes, it will toe in and out under compression and droop. Next time its on the alignment rack I can show you exactly how much. There is toe change due to bushing flex, geometry and also the rear toe links are thin and designed to bend inward and outward.
'11 E90, Cantrell brake ducts, Apex 18x10 ARC-8, 265/35 PSS, RS19 pads, -2.2 camber, CMS Lap Timer Pro