jcomm - I hope you get your answer sometime despite all the irrelevance here.
From where I sit, I ask where your normal axis stability factors came from as it would appear the directional moment from yaw is too low while the moment from the rudder deflection is too high, and I question the value of any spoiler yaw factor used. Wings level with full rudder would require a large spoiler deployment producing a significant degrading yaw rate.
As misd said a while back, any resulting turn rate would be extremely slow and I suspect you would hit the ground well before completing a 360.