Plane Sailing
Astral Admin - Mwahahaha!
I'm pretty sure it's been clarified somewhere by WotC (wracking brain to remember where though) that you can do a double move. It simply reduces your move 'score' to 2.
Which also meant you could run, effectively doing a full round of actions to move up to eight squares.
heh. I'd believe that when I see it from one of the designers (I certainly wouldn't believe it from their customer support!)
As it stands, I'm happy with the reading that goes 'max 2 move under any circumstances'. The examples you give above would make it almost worthless in most circumstances, surely.