In Dragon Ball Resurrection of Freezer, Goku, when transformed in Super Saiyan God Super Saiyan, is almost killed by a laser beam from Sorbet. Now how could this happen? Was his ki so low even when he was a SSGSS? Later in the Dragon Ball Super series this seems to be corrected because he isn't transformed when he is hit. But then again, I don't know which is the version that counts, supposedly the manga is over the movie and series but between something that happens in the movie and series I don't know.
Then the question of this topic is: can a transformed Saiyan (Super Saiyan, Super Saiyan God, etc.) lower his ki to base-human level when transformed? Was this just a mistake or what?