What in the world happened in the Donn

Hymm Book.... really?  I did not see that one coming, especially since this was not a turf race.  What happened to Shack?  He usually goes right to the lead, was he purposely not on the lead?  I think he probably needed a prep race before running in Grade 1 company again.  Dale Romans apparently has no excuse for why the favorite ended up finishing in 7th place.  But even though Shack went off as the favorite, both Flat Out and Ruler on Ice ran poorly.  Hymm Book beat Mission Impazible in a photo finish.  Mission Impazible would of won, had he not drifted so far out coming down the stretch.  They were folled by, Redeemed, Where's Sterling, Flat Out, Trickmeister, Shackleford, Ruler on Ice, Sangaree, Al Khali, and Soaring Empire.