Zhou Tian would never willingly entrust his life or death to someone else. If he had been willing, he would not have refused to join the Divine Realm's forces back then. If there had been a possibility of becoming someone else's plaything, Zhou Tian would rather have perished in this jungle from the start.
However...
While Zhou Tian did not deny that the deity might truly possess such an ability, the power Zhou Tian deduced was overwhelmingly strong. Considering the current state of the Divine Realm, it was evident that no one could achieve such a feat solely through their own ability. As such, even if that power had a mind-altering effect, there must have been limitations to it.
Thus, while Zhou Tian had already grown wary of the ability the deity had demonstrated, he showed no hesitation in his actions.