Here is part of what Trayvon’s girlfriend DeeDee actually said: http://www.youtube.com/watch?v=3jhes6BlFf8&feature=related
She also speculated that someone pushed Trayvon “because the headset fell off and the line went dead,” but she had no way of knowing exactly what happened from what she said in the interview.
The headset could have just as easily fallen off when Trayvon coldcocked Zimmerman and broke his nose.