Oh I second the block chat option. I left a game I was winning because I refused to tolerate abusive behavior. Having to screen capture the abuse save it, post it and wait for an admin decision , when I can simply choose to ignore chat. Leave the admin decisions for unsportsmanlike like play.
I played you a long time ago when were were both bronze–I'm happy to see your rising in the ranks!
With regards to walking away from a game you are winning because of abusive chat most certainly must have been very frustrating. The single best way to deal with these horrible and ill-mannered losers is to practice doing the following after receiving abusive chat:
1) Close the BattleChat window and imagine that you have just blocked this reprobate
2) Turn off your sound and imagine that you have just told the jerk, "I've just shut you up and there's nothing you can do about it now."
3) Finish the game and make yourself the winner! Then, you do not need to imagine how great it will feel to defeat an unworthy opponent.
Until there is a better way to deal with these awful and horrible people, this is your best option in my opinion. It takes a little practice, but once you convince yourself that you have taken TOTAL CONTROL, which you most truly have done, then you will really begin to appreciate how much better it will be for you to continue defeating these morons. Besides, while they are concentrating on chatting abuse messages, you may calmly concentrate upon winning the game–already, because you will have closed the BattleChat, you have improved your odds over theirs because they are distracted with their idiotic chat–this is no joke...you have improved your odds. Please consider that the next time someone acts terribly towards you.
Take it easy, TalonsHand, and keep kicking butt!!!