he just seemed to shrink up into the chair

An empty shell...

How that meeting turned…odd.  It became very-very odd.  And I know quite a few people walked out of that place feeling the exact same way.
Ulsterman:  Good – explain what was odd.  What happened?
Wall Street:  Others spoke – spoke to the president.  That was the format.  After the initial formal introductions.  They spoke, and he listened.  At least he appeared to listen.  For awhile.
Ulsterman:  Awhile?
Wall Street:  Yes – awhile.  There came a time when he seemed to lose focus.  You could see…it appeared the energy just left him.  Like he wasn’t the same person who had walked into the room just 30 or 40 minutes earlier.  He…President Obama, he just seemed to shrink up into the chair.  And he started to look down at his watch.  Repeatedly.  Eyes were starting to glance back and forth at each other – people communicating to one another what everyone was noticing – how the president, mentally, seemed to have “left the building”.  Well, now it was the president’s turn to speak.  To give some of his own input and reaction to what others had been saying. He didn’t stand up.  He didn’t even straighten up in his seat.  President Obama just turned to his left and said, “Valerie?”

Valerie, his fellow leftie smiley-faced brain trust. His co-con artist.

Doesn't that shrinking remind you of this:

Then there's the description of his days in the White House. You decide.

...Valerie, Panetta, Bill Daley in the Oval, Bill Clinton at the podium...Bill...

shrank into his chair

--thanks for the link, pjMom