I believe if you ask Hadvar ( provided you choose him to escape with ) about the ambush, Ulfric surrenders willingly so his men would be spared. But seeing as how they began executing anyway, who knows. But I couldn't see into detail about the cloth piece, but I'd it was wadded up and shoved into his mouth, he might not be able to speak clearly enough to use the power.
Well yes, that`s what I thought at first, but if they`re about to be executed anyway then why didn`t he just shout and help his men escape? And if it`s because the rag about his mouth was stopping it then that doesn`t really work as he can still shout unless that thing was wedged down his throat in which case he would suffocate.
It`s been bugging me for ages.
Because then that wouldn't be fun to force the player to have to remove their helmet to shout. Nerevar put an ebony helmet on Ysmir's head so his shouts would reverb and drive him insane. Helmets do stop the Thu'uum, but would you honestly want to be hassled with that?
Yes. I`d wear a helmet that allowed my mouth to show or allowed air through, there are plenty. Why the hostility? Don`t like seeing that something`s wrong in the plot? Or you don`t like someone who actually thinks a bit?