Wikipedia says he escaped once before. Money graf from ABC:
Badawi, along with 22 others, had escaped from jail in February through an underground tunnel. The prisoners were believed to have help from both inside and outside the prison to dig the 460 foot tunnel.
Odds of a third escape: extremely good.
I sure hope Yemen’s complying with Article 3 of the Geneva Conventions in holding this guy. The thought that he might be exposed to “degrading” or “humiliating” treatment — brrrrr.