Turning off motion sensor?

[Balkenkreuz]

Using a dualshock 3 as an emulated wiimote classic and in monster hunter tri moving the controller makes the camera jump around.

Anyway to disable that?

[Garteal]

Sounds like you're using MotionInJoy with the PS3 profile enabled. Set it to the 360 profile instead which doesn't have sixaxis enabled.
Ultimately I'd highly suggest to remove MotionInJoy and install the SCP Drivers instead. Make sure to read that page on how to install it properly.

[Balkenkreuz]

Cheers!