Amazing a vid surface- It looks like the helicopter came up from the pipers blind spot, under the wing. I dont know if having a TCAS or ADS-B would have helped in that situation. The corridor is way too busy- last time I flew it about a year ago, the ADS-B was on red the whole time (airplanes climbing- descending and crossing w/in a 5nm radius)

Im not surprised 2 controllers were placed on leave from teterboro. Those guys have put me on sticky situations in the past.