Board Thread:Ninjago Wiki News/@comment-26381381-20150714184447/@comment-26509603-20150715134924

1. Technincally, since Samurai X has bulky armor that would seemingly get in the way, only Nya is able to do spinjitzu (like you said in episode 25). She did learn it (and I assume she mastered it), probably from Sensei while the other ninjas were out on missions.

2. In Season 3, the ninja still used spinjitzu quite a bit, but the nindroids were usually too good to use spinjitzu on. In Season 4, they focussed mainly on elemental power in the tournament, rather than the unfair advantage of spinjitzu. In Season 5, spinjitzu was useless against Morro, since he controlled the wind and cancelled it out.