The SPLM candidate Judi Jonglei Bioris won by a wide margin.

In April 2012 he defected again, and lead a Murle-dominated militia in the South Sudan internal conflict for several years.

A March 2014 peace accord with the GoSS appointed Yau Yau as the Chief Administrator of a newly established, semi-autonomous Greater Pibor Administrative Area, with virtually the same authority as South Sudan's state governors.

[8] He gave up the leadership of his Cobra Faction which was dissolved after merger with the SPLM-IO-allied Greater Pibor Forces in January 2016.

[2] Afterwards, the former troops of his private army were transported from Pibor to Juba to be fully integrated into the SPLA.

He was accused of profiteering in South Sudan's Civil War by forming an oil company with two British citizens during his governorship of Boma State.