Vessel, Wash and MPA

Question, player A play a Vessel, player B play Wash, player A plays another Vessel.
Did player A gain trifle bonus from second Vessel and can play another master card?

Looking for LSJ reply in below thread he says yes but some players here want to confirm if this change over the time with new rules or clarifications.

groups.google.com/forum/#!searchin/rec.games.trading-cards.jyhad/wash$20vessel%7Csort:relevance/rec.games.trading-cards.jyhad/3Cd-DNfT7yQ/S8o1vojP04gJ

Vessel
Master: trifle. Put this card on a vampire, and you may burn a Blood Doll in play (if any). During this vampire's controller's untap phase, he or she may move 1 blood from this vampire to his or her pool or from his or her pool to this vampire.

Wash
Master: out-of-turn. Trifle. Do not replace until your next untap phase. Cancel a master card played by your predator or prey as it is played (no cost is paid). That Methuselah gains a master phase action (if the canceled card is an out-of-turn master, the master phase action is gained during that Methuselah's next master phase).

Rulebook
Trifle: Some master cards are identified as trifles. When a Methuselah plays a trifle (and it isn't canceled), she gains an additional master phase action. For an out-of-turn trifle, she gains a master phase action in her next master phase. A Methuselah can gain only one master phase action from trifles in a given master phase; others act like regular master cards.

Yes, the player gains another master phase. This is fairly clear from the wording of the clause in the rule book: A Methuselah can gain only one master phase action from trifles in a given master phase.

1. Trifle played, cancelled by Wash (clause not triggered).

2. Wash gives another master phase.

3. Another trifle is played and player gains another master phase (clause now triggered).

Thanks