Not in any rigorous way, I did an analysis of the various "unexpected" scenes in the game in question, and found that various types of unexpectedness did indeed occur, as hinted at above. But the gross types we are so familiar with were among them.
For example one scene is illuminated by Shusai's own comments as follows (it is game 1907-12-02a in the GoGoD database). You may fall off your chair in surprise!
It's going off at a tangent, but this and subsequent analysis of the endgame is just like the simple-looking endgame that Dieter puzzled over in another thread recently. Again the pros found it just as taxing as Dieter found his position. The pros may have better tools in their mental cupboard (and in this game MUCH more time - it took 122 hours) but they are still taxed to the limit. Diverting to ballet once again, I was surprised to learn recently that the reason dancers take a bow after a pas de deux is not to milk the applause and feed their egos. It is because they are knackered and need to catch their breath. They are human, even if it does look like they can fly.Tamura: “When I bent round at White 144, I had read out that if Black played the hane at 191 instead of 145, I would cut at 156 and capture one stone and so win this game by two or three points. However, Black unexpectedly played 145. I ought to have thought about my reply, but I it based on the shape alone and, while flustered, I was extremely careless and blocked at 146. If I had played the hane at 152 here, my prospects of victory probably would not have changed after all. But because of the careless block, I was again taken by surprise when Black attached at 147. After all that, I didn’t know who was winning. A game I had thought I had won had become a game without a clear outcome. I had to think carefully. I spent eight hours thinking at this point. First, I tried counting based on whether White blocked at 181 or played for a ko with 149. But these two options proved unclear no matter how I counted. Therefore, as a final measure, I pushed along at 148 as in the game, having decided that was the most favourable way to play. However, I still didn’t know what the outcome would be.”
As to pros being human (they screw up, they cheat, they mock, they abuse women, etc etc) remember that eminent surgeons cut off the wrong limb rather more often than we would like. The latest incident I read about was due to a surgeon thinking that X mean "don't cut" whereas it was the piratical "X marks the spot".. Xs are now commonly used on web sites to denote a selected option. But for many people that still means NO. A tick is much better. I just had a questionnaite in which the compiler felt obliged to make the point: TICK TICK TICK if that's you CHOOSE CHOOSE CHoOSE.