Who CARES if Sussman himself shows up in court the 9th? Nelson is leading this case. Nelson certainly seems capable of running this show - or I am guessing Sussman would never have given it to him.
A good leader finds talent, cultivates that talent, and gives that talent the opportunity to demonstrate WHY it is that the leader sought that talent out to begin with.
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Don't get me wrong - it would be 'cool' of Mr. Sussman were to show up. But I don't think he would do much directly even he were to show up - if he actiually is a good leader. A good leader lets those who do the work take the limelight and doesn't showboat.