BBI has limped & coughed till now because of one simple thing: It is presented as "anti-Ruto". I wish people would stop the nonsensical idea. Ruto isn't against BBI and if he were he'd have ended it. He has the numbers.
I have a nasty feeling he realized it has become an albatross around Uhuru & Raila's necks and loathed the idea of rescuing them. I believe Raila will nevertheless seize ownership of last night's defeat and make it his own.