Not to dig too deep in to the messiness (application-wise) of that language, but...
5.P.3
The Reassignment shall be for a flight that is scheduled to depart within 3 hours of the original departure time of the cancelled leg or the Pilot shall be released and pay protected for the Sequence.
Section 23:
Sequence - a series of flights over 1 or more days, which starts in the Pilot's Domicile and ends with a legal rest break in the Pilot's Domicile.
Sequence Release Time - the time of the end of duty in Domicile on the last day of a Sequence.
So if cancelled at an outstation and NOT reassigned within 3 hours, how can a pilot be
released and pay protected for the Sequence under this language? By definition, the Sequence ends with a legal rest break in the Pilot's domicile. Therefore, the Company has a contractual obligation to release you from your Sequence in domicile, not at the outstation. They must get you back to domicile. We've had pilots walk away and disappear until their next sequence at an outstation after a cancellation attempting to pound a square peg into the round hole that this language is.
Key here is since there is plenty of confusion about this language these days, CALL YOUR UNION reps if you have questions or concerns.