Sadly not unbelievable. Too bad Texas didn’t refuse to arrest and extradite him. Would have like to see the dust up when NJ tried to invade.
His federal appeal should cite the priviledges and immunities clause (aka Comity clause) of article IV, section 2 of the constitution. As an out of state person, he can not be punished in one state for exercising a priviledge and immunity that he has in his home state.
This is different from the P or I clause in the 14th Amendment.