The BIG3’s event in Philadelphia on Sunday ended on an ugly note, with many Allen Iverson fans vocally angry that he pulled out of playing in the final game only 25 minutes before the evening’s opening tipoff. But on Wednesday, the 3-on-3 basketball league’s leaders were thrilled Iverson was even able to make it to the arena, to coach and sign autographs and address the crowd, given his still-mysterious physical ailment.