We were both fighting the same guy and I accidentally hit him, all good I thought, he accidentally hit me as well.
After we killed the guy, I saw he pressed the M button, so as well so did I after. After I did so, he attacked me again and again until I died...
http://desmond.imageshack.us/Himg15/scaled.php?server=15&filename=mb97w.jpg&res=landing
http://desmond.imageshack.us/Himg3/scaled.php?server=3&filename=mb96.jpg&res=landing