Typically, states can hold somebody for up to sixty days when the other state initiates extradition proceedings, subject to extension for completion of the extradition process. Normally, though, he would have agreed to waive extradition as a condition of his parole.
He's going to have to go back to Arizona to face the music on his parole violations. His odds of getting a break went way down when he chose not to act responsibly in the first place, not just by taking drugs while on parole, but trying to avoid the consequences of his parole violation and necessitating these interstate proceedings. He should get help from a criminal defense lawyer.

