According to documents filed by the D.A., there was "insufficient evidence of corporal injury resulting in a traumatic condition for proof beyond reasonable doubt."
As TMZ first reported, Dillon was arrested at his home on May 1 after his wife, Desiree Dillon, called 911 claiming she had been assaulted.
Corey tells TMZ, "The truth will always set people free, so let it be told. I'm a real dude and if I did it, I deserve the punishment. But in this case it's not the case at all."