I'm trying to rectify this by putting in a conditional in the FlameAtronachEffectScript to prevent the explosion from occurring... but I haven't the foggiest clue for the script syntax for it. Since there are no special keywords for the summoned flame atro that I can hook on to, could a Form List be used?
The syntax of what I just tried is probably awful, but I still

if selfRef.GetBaseObject().IsInList(ConjuredAtros) == 0
There doesn't seem to be any equivalent papyrus command for IsInList according to the CK wiki, but I was hoping that it'd work... nope. Fool's hope it seemed.
So is there any other way to check an actor ref's base to see if it's in a formlist?