throw under the bus

Offer up another party for blame, punishment, or harm to deflect it from oneself.  Sacrifice or betray. Frequently develops into a competitive sport as soon as a complex project starts to go south.

"NASA threw him under the bus revealing that the paper was dismissed by the peer-review board of the National Journal of Astrobiology".

The douchebag who said this probably also said smart, viral, or Red Ocean.