Tip: if a QR skewer is apparently stuck in your rear hub, do not bang the drive-side end of the QR on the ground in an attempt to free the skewer and allow you to replace it. If you do, the entire cassette and freehub body will fall off, spilling its delicate springs and pawls onto the ground necessitating both an expletive-filled search for the fallen parts and a premature end to the morning's ride.
In related news, anyone got any idea how to get the damn thing out? Soaking overnight in WD-40 and a large hammer have so far failed, it's apparently seized solid. I only regreased it a couple of weeks ago too.

