I find that SF tends to skip those results. . .casual SF is generally low, and when someone decides to attempt something way out of their league (which happens from time to time) the bonuses stack up to push way out. . .of those three, the "Fire in reverse" has happened a few times.
It's funny that the table there goes: Fail to cast, minor internalization, succeed in casting but misfire, major internalization. . . .
You'd think it would go: Successfully cast but misfired, failed to cast, minor internalization, major internalization.