Kammala jumla mai zuwa: Matsanga yana daya daga cikin shugabannin 'yan bindiga na Ninja masu biyayya ga shugaban adawa Bernard Kolélas a lokacin rikicin siyasa na 1993-1994, wanda' yan bindiga suka yi yaƙi a Brazzaville. A farkon shekara ta
Yuni-Oktoba 1997 yakin basasa, ya tsallake zuwa gefen Denis Sassou Nguesso da 'yan tawayen Cobra.