Upon receiving conflicting reports, the officer reconsidered his position.
Literal
Conflict-do report [object-を] receive [and], that official [topic-は] self [possessive-の] position [object-を] think-again-did.
矛盾する ('to contradict, to conflict') is a formal Sino-Japanese verb — 矛盾 literally means 'spear and shield,' from a Chinese fable about a merchant selling an unstoppable spear and an impenetrable shield. 考え直す is a compound (think + redo) = 'reconsider.' A formal, bureaucratic-sounding sentence.