As I see it, certain elements within the whistleblower community are a detriment to whistleblowers acting out of conscience. Mr. Kiriakou will have to make a choice about what kind of person he wants to be after repaying his debt to society. At the very least, such a choice should be an informed one.
I imagine that GAP will now be working double-time to smear this particular critic and do damage control.
Btw, the letter contained a prinout of this diary: http://my.firedoglake.com/wendydavis/2013/03/01/with-head-held-high-john-kiriakou-entered-prison-yesterday/