The very first thing to do to recover from a spiral dive is LEVEL THE WINGS!
Actually, UNLOAD the elevator, then LEVEL the wings, then pitch to the horizon.
If you have a significant amount of pitch (G's) in, and roll without unloading that pitch, you increase the loading on the wing root, possibly to the point of exceeding its design limits. In the ultimate case, the wing may even break off. This is called wing root bending effect and the problem is that it doesn't show on a G meter. Flying below Va also doesn't protect you from it.