Technically he was now on Potter's side of the war. This thought made him bitter and sullen, he comforted himself with the fact that it was all purely selfish. If he carried out the mission, he would be branded with the dark mark and forever in the Dark Lords servitude. If he failed the mission, his mother, himself and possibly his father would all perish. The problem with all this knowledge was that now he knew where he stood, he wasn't sure what to do about it. 