Brandon Marshall says that Smith did not instigate, and did not put his finger in IK's face.
http://espn.go.com/new-york/nfl/story/_/id/13455252/new-york-jets-wr-brandon-marshall-says-qb-geno-smith-instigator-fight-ik-enemkpali
and
http://espn.go.com/new-york/nfl/story/_/id/13455252/new-york-jets-wr-brandon-marshall-says-qb-geno-smith-instigator-fight-ik-enemkpali
"Did he put his finger in his face? No, he didn't," Marshall said on Mike & Mike on ESPN Radio. "Geno Smith, he didn't do anything wrong that day. It's just an unfortunate situation.
and
Marshall told Fox Sports that Smith "did everything the right way" on that fateful day in the locker room.