I had this happen to me yesterday for at least the 2nd time. Power flickered and the spindle stopped spinning, but the carriages kept moving, dragging the bit over the work piece. Unfortunately, this happened on a 50" x 20" customers live edge slab. It was in the middle of a 7 hour finishing cut of a 3D model scene. Frustrating for sure. I would much rather everything stop rather then potentially ruining a difficult to replace piece, by dragging a non spinning bit over the workpiece.
I have battery backups for my computer and TV setups. Is there anything reasonable for a 220V setup like the Axiom?