Mark Madden recently called Karen "satan" in his article. I think that was uncalled for. Such things are quite common in society. The husband is a douche, the wife is tired, meets another man, finds solace with him. Kurt doesn't exactly seem like a very accountable husband either... again, not uncommon... but I feel that it's wrong to blame just Karen in this case. It's not as if she was screwing Jarrett for a year while Kurt was deeply in love with her, pretended everything was okay and then left him in despair. The relationship was gonna end anyway, with or without Jarrett.
The storyline and that No DQ match between Angle and Jarrett was really brutal. They totally capitalized on the animosity between the two men and turned it into compelling television content.