tergiversate

To evade, to equivocate using subterfuge; to obfuscate in a deliberate manner.

The officials soon concluded that the easiest way to remain on good terms with the court was to elude responsibility, to tergiversate, to prevent results.

To change sides or affiliation; to apostatize.

Henry had hesitated before authorising the spoliation; he would soon tergiversate on other matters of doctrine but this act was irreversible.

To flee by turning one's back.