My plane leaves in a few hours and I'll be off the grid for a bit, so my apologies for not further exploring this.
But it does appear that Major Nidal Hasan was in fact participatory as an adviser for the Presidential Transition Team.
For the sake of transparency it should be noted that the task force was started seven months before the November Election.
The article (hyper-linked below) is from The George Washington University's Homeland Policy Institute titled "Thinking Anew-Security Priorities for the Next Administration" part of the Presidential Transition Task Force from April 2008-January 2009.
Nadal's name is on page 29 and he is credited as a "Task Force Event Participant"
Homeland Policy Institute Presidential Transition Task Force
Guess I've got my light reading for the plane ride.
Be Safe out there.