http://onemileatatime.boardingarea.c...ngrade-rights/
"Alaska does not guarantee allocation of any particular space in the aircraft. Seat assignments, regardless
of class of service, are not guaranteed and are subject to change without notice. Alaska reserves the right
to reseat a Passenger for any reason, including from a seat for which an additional fee has been paid,
and if a Passenger is improperly or erroneously upgraded to a different class of service. If a Passenger is
removed from a seat for which a fee has been paid, and the Passenger is not re-accommodated in the
same class of seat or a seat of equal or greater value, or if a Passenger is downgraded from a class of
service and is not re-accommodated in a seat of an equal or greater class of service for which a fee has
been paid, the Passenger may be eligible for a refund in accordance with Rule 16. "
Where's that quote from? It isn't part of your link.
If it's the CoC... then my advice to the OP stands (since it makes even less sense to "play chicken" with trying to get IDB'ed- you could end up with the difference between what you paid and cash).