While I would tend to agree with you, there is of course some ambiguous language in the paragraph.


If Deadheading is the only remaining assignment prior to release, upon completion of the last operated Segment or training, the Pilot may request to be released from the Deadhead assignment(s). If no further conflicting assignments are reflected on the Pilot’s schedule at the time and there is no foreseeable need for the Pilot during the remaining Duty Period, the Company will grant such release.

They will argue this like the "live" reserve grid. Still wouldn't stop me from trying though. FWIW, I have not once had a problem being released from a deadhead at the end of a trip but it appears that might be changing.