Works for me. I imagine the Patrons probably know better (Athena especially), but since I've already got fanwank going on Athena's behavior through all that, it's perfectly workable that she either incorporated or, perhaps even more likely, anticipated or even instigated Ares' action as part of her own gambit to get Diana back in the place and position where she was most effective. (And even if you don't go that far, and assume Byrne is actually accurate in the whole "strip her of godhood = kill her", it still makes sense for the Patrons to hold their piece, in order to protect Diana.)