oh that code just goes through the model's limbs and turns them inside-out. they look normal again.
came up with the code working on Arena back in DB like 4years ago heh cause i didn't know of a way back then to do the FPS hand without locking.
You can do it quite easily, though you have to know your trig 'SohCahToa'
Basically you want to update the position & angle of your object based on the camera. I believe I wrote some ancient RTS Camera code for the snippets forum several years back when DBP was new; it shows you how to move the camera based on an 'orbit' routine.
Although at first it doesn't make sense how that'd be helpful, if you imagine that the orbit object is the camera; and the object you wish to react to the orbit is a close range object like your FPS hand; it becomes easier to do.
Of course you can always totally for-go the complex that would make it move like Half-Life's and go with something that works identical to locking.
Like say offsetting your object from the cameras base position; then just updating it as the camera is updated.

voila