How was Malan Tugrina able to surprise the Gotal, Tolokai?
It was much the same situation as with Tal’dira. Tolokai was brainwashed, but part of him still struggled with the orders he was being forced to carry out. He couldn’t not attack Mon Mothma… but he could force himself to ignore some of his sensory input. In other words, he subconsciously turned a blind eye to Malan in the hope that Malan would do exactly what he did.