Re-Asking Questions not quite answered!

I think the super ball special effect cause the item to be reflected on caster:

Code:

C2/403E: B9 18 30     LDA $3018,Y
C2/4041: 85 A6        STA $A6     (mark attacker as "reflected off of", which will later
                                   trigger function C2/3483 and cause him/her to be
                                   treated as the missile launcher or ball thrower.)

Still, I'm not really sure which value should $A6 have to prevent this... You may try to NOP those 5 bytes but I can't guarantee it will work :/