Instead of attending the party, Angel is watching hockey.
Hockey, being an very violent game, reminds Angel of the street fighting he used to relish (and, indeed, was trying to do away from the 'Big Brother' Wolfram and Hart represents.) He's avoiding the party, or any sembulance of happiness, because he knows this isn't right. See arguement with Wesley about Nina in Smile Time.
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Hockey, being an very violent game, reminds Angel of the street fighting he used to relish (and, indeed, was trying to do away from the 'Big Brother' Wolfram and Hart represents.) He's avoiding the party, or any sembulance of happiness, because he knows this isn't right. See arguement with Wesley about Nina in Smile Time.