autokilled after routing an ashen angel. bug?

[Omnirizon]

But the AA had routed before any of that even happened. my TO hit the the AA and had him down to 4/35 HP, while my TO was still at 68/68. According to the replay, the AA actually became enslaved on that last hit (the little red cross bleep). You can see where it says "army rout for independents, no units left" or something. Then in the next line, instead of routing, the AA takes another swing, actually manages to inflict damage (but not near enough to kill), and causes holy avenger to proc. More weirdness ensues.