Nice write-up, to the point.
How were the outside temps, session length, and were you on stock brake fluid?
Downshift: It is awkward it prevents a shift in a straight line, hoping the same that the issue gets resolved.
2008 E92 M3 Jerez Black,DCT,Fox Red ext,Prem,Tech,19", ipod/usb, CF roof and trim
2010 E91 328i Space Gray,Black int, M sport, most options
2007 Montego Blue 335i (retired)