Can you link a specific part of the log browser or expression editor where you think this is happening? Looking through myself, I don't see anything out of the ordinary. Just posting a log and saying what's basically the equivalent of "something is wrong" isn't really helpful.
You are aware that some of his abilities just go out on multiple targets...? Overcharge is applied to I believe 3? people (or more) on 25 man. People can and will get hit by all 3 if they aren't in the right position.