Is this fast opening of buds more likely to be a trait of this plant
(genetic or otherwise)? or is it another way of responding to the stress
of
the move -- blast some buds, open others fast?

It's quite an impressive plant all told, and I will try to take photos
this
weekend, but it's got me a bit puzzled -- just when I think I know what to
expect, I am proven wrong yet again.

Hi, Joanna,

FWIW, we have a lot of Phals, and I can't say that they all behave the same.
Some open more quickly than others and some last longer than others. I've
gone to bed some nights absolutely certain that a particular plant will take
another few days to open up, only to find flowers in the morning. Never look
a gift horse in the mouth, I say! In any case, I'm sure you're right about
the blasting buds.

Diana