Activesync-on-cradling is impossible to prevent. But not really a bad-thing, is it? Well.. ok it is a bad thing, I would prefer the axim to not be powered on all the time, but just turning off your display backlight (press and hold your power button for a while) will fix this.

Give a man a fire, and he will be warm for a day. Set a man on fire, and he will be warm for the rest of his life.