A bit more on the pilot... doesn't exactly come off looking like a criminal mastermind or a nut case.

http://www.sfgate.com/business/bloom...558.php#page-1

http://qz.com/188723/seven-things-we...net-footprint/

http://www.news.com.au/world/malaysi...-1226857201698

The tabloids are making a big deal of the fact that the pilots are being investigated, which seems natural and inevitable under the circumstances. If anything incriminating or suspicious has come up, it has not been released.

From WSJ:

http://online.wsj.com/news/articles/...753452924.html

Capt. Zaharie's family left their home in a gated community--located about an hour's drive from Kuala Lumpur--on March 8 after news came in that Flight 370 had gone missing, according to one of the estate's security guards. However, asked at Sunday's news briefing if Capt. Zaharie's family had moved out of their home, Malaysian police chief Khalid Abu Bakar said that wasn't the case.

Mr. Fariq's family meanwhile has remained at home in another suburb, roughly 10 minutes' drive from Capt. Zaharie's home, but have shunned media attention, according to a neighbor.
"Left the home" can easily just mean they went to a relative's house, or any number of other things. it doesn't mean they moved out. Jumping from there to the supposition that the pilot was gay, based on noo evidence beyond his support for the PKR, seems pretty far off the page. Of course personal stress and the completely unpredictable action can never be discounted... but again, if there's anything even vaguely suspicious in the picture, it has not been made public.