Thanks for the info "G".
I can atleast make some assumptions now, regarding what it is doing.
On the AB330, in an overspeed, overbanked condition positive static spiral stabillity is used to level the wings. In an alpha or high angle of attack, low speed, overbanked condition the same positive stabillity is used to reduce the bank angle to 33 deg. (which is the normal mode, max allowable bank).
Is there an aerodynamic reason for the difference( eg. lower speed, higher AOA so less stabillity??), or is it just another fly by wire mystery?