Haven't actually played with it, just run a couple of quick tests. Seems with the client extender the random change to facing at the end of a move is still present (happens randomly, not 100% of the time). However the PC is immediately turned back to it's original facing which basically mitigates the problem.
When I get time I'll fiddle around with it a bit more.
Edit - found the details about the fix in the CE thread. Seems the reset to facing is by design so it'd appear to be working as it should. As they seem to be the culprit maybe I'll see if I can play without using the turning keys and drive with W and the mouse when I feel like getting down into FP mode. Hmm.
-kaos