Diff is sitting in my work area with the cover off. Great success today.
Was able to drop the diff using easily obtainable tools and without removing the exhaust.
I've got quite a few pics, I'll post them up when I'm done. I'm thinking of starting a new thread as a howto.
Here's two pics
'09 E93 M3 6MT, H&R sports, VMR710 19x9.5+22f 19x11+25r, Michelin PSS, VF540, AA TPs
'09 Z4 sDrive35i, Deep Sea Blue Metallic, DCT, Premium Pkg, Ivory Leather pkg