What was going on through the players mind, is a question only the player can answer.
Apart from giving opinions, no one here can really answer that question in a constructive way.
Given the embarrassing situation, I suppose an answer from the player involved would not be forthcoming soon, and even if it did, you will likely be disappointed with your expectations of gaining insight into high-level play.
Frankly, I am surprised that any experienced bridge player would be fascinated by this, with expectations of gaining insight into high-level play, even after reading the article by Zia Mahmood which does not even attempt to justify the bidding.
Note: this is not one of those situations where experts have a difference of opinion. This was just someone turning their brain off. If it was truly a subtle/discussion worthy situation, Zia's article would be something completely different.
btw, you can find some info here: http://www.worldbridge.org/tourn/Veldhoven.11/Microsite/Bulletins/Veldhoven.2011.Bulletin.%5B6%5D.pdf, which does imply that it was an embarrassing moment for the player involved (See page 15, the numbers game).
If you are interested in the opening 1NT bid, there might be a question there.
Also, I would like to point out that a question being closed does not mean it is the end for it. It can be edited, and reopened.
And your "new guy" made me laugh (sorry!).