Re: I think that the shinobi who's masked got broken is a Leaf Ninja?!
if you look at the next page the mist dude on the top left asks "who's that guy?"
"who 'IS' that guy" refers to Obito since you cannot refer to a dead guy in the present tense, in this sense.
however, i think it is a translation problem. the guy who had his head crushed looked like his forehead protector is from konoha. why would kishi make a tease such as this?
the visible symbol on his forehead protector is that of an acute angle, the right side of the konoha symbol.
if the symbol on his forehead protector was that of the mist it would have two squiggly lines since only the right side of the forehead protector is visible..
It should have said "who 'WAS' that guy?" instead of "who 'IS' that guy?" if the former is true, the mist ninja was referring to the ninja that had his head crushed.