B2 Split Rudder

There was nice discussion on B2 Split Rudder use during climb earlier.

http://www.ammochiefs.com/Diego%20Garcia%204.jpg

The discussion made me think concerning B2 yaw control. In general, large
rudder input is needed for number of situations. First is the crosswind
take off and landing. For take off, most aircraft tends to weathercock and
large rudder input is needed especially when ground speed is low. B2 Split
Rudder is not effective for this, in fact do to its geometry, at certain
speed, rudder force can reverse! I suppose B2 simply don't weathercock. As
for crosswind landing B2 needs to be slipping on approach and not crabbing.
Am I right?

The other situation where large rudder input is needed is during spin
recovery. Was B2 ever tested for spin recovery? Or do the flight computer
simply will not let B2 into spin situation? What if split rudder gets
damaged on one side? Do you loose B2 at that point?

Emilio.