Who thought up the first concept of Live PD and got the ball rolling to getting it produced? Was it A&E or Dan Abrams or a third party? If it was Abrams, he can do whatever he wants with the “idea”, if not and it was A&E, they may have a case. A&E should have let the show run instead of running scared.
Like I posted previously, it’s a blessing in disguise to be canceled on some occasions because agents write a trigger clause releasing any copyright material. AE has nothing and they know it. There is no such thing as an airtight NDA/non-NDA/termination agreement in our biz, esp, if you are a member of the Producers Guild like I am. We can easily tell them to tell in this case, AE to F off.