PI had no intention of destroying the precious bust. And in any case, your valiant gesture wouldn't have accomplished anything, since it was of course the cannon that needed to be blocked, not the rifle.
Hey check it out. Every week we'll be revealing some new troll characters from Hiveswap until Act 2 is out. Follow the Troll Call here, and meet the first two here. Expect a few more surprises like this to drop in coming weeks.