In the article, Dianne said he went on a personal trip. She didn't say an investigative trip or an authorized trip. She could have left at as "he went Benghzai" but added "personal" to the statement. To me that means he went on his and outside of the government.
Personal tells me he went himself, at his own discretion, but using his authority as head of the CIA and using government transportation, security, etc.
“Personal” does not imply to me that this was done on his dime, as a private citizen. It would make no sense to do so, and I doubt the Director of the CIA even would be permitted to do such a thing to a place like Libya.
We are parsing vague descriptions, but I don’t see any reason to take the limited words so far available beyond what is plausible.
Obama's desperate and angry demeanor during the campaign and even his and Valerie Jarrett's mystifying last minute threat of REVENGE made no sense in the context of a race with Romeny, who had done nothing personal to Obama; his anger and bile was what we took as evidence that Obama knew he was going to lose the election. But there may very well have another explanation in which the revenge comments make perfect sense . That wasn't a defeated Obama we were seeing, that was probably the Obama who had found out about the trip and just realized that his CIA chief wasn't going to go with the plan.
What we are seeing now is part of Obama's promised REVENGE.