  In the Quark-Nova model, AXPs are quark stars surrounded by a degenerate
iron-rich Keplerian ring (a few stellar radii away). AXP bursts are caused by
accretion of chunks from the inner edge of the ring following magnetic field
penetration. For bright bursts, the inner disk is prone to radiation induced
warping which can tilt it into counter-rotation (i.e. retrograde). For AXP
1E2259+586, the 2002 burst satisfies the condition for the formation of a
retrograde inner ring. We hypothesize the 2002 burst reversed the inner ring
setting the scene for the 2012 outburst and "anti-glitch" when the retrograde
inner ring was suddenly accreted leading to the basic observed properties of
the 2012 event.
