Being a 30d, it isn't difficult to get DSC to intervene despite the fat 255's at the back. It intervened during a J-Turn, wet roundabouts and dry ones when going for it and yes it has appeared off-throttle during understeer in the snow. The throttle was then stabbed to get the back out instead and was beautifully caught by both driver and DSC.
2006 BMW E60 520d SE 6MT
2009 BMW E90-LCI 330d SE 6MT
Current: 2012 F30 328i Luxury 8AT
2015 Audi A6 Avant Ultra, Black Edition (sorry!)