Soemon was not quite so coordinated as Moxie was, and ended up tripping over the Meow Wow in his efforts to get at some more Nightmares. He was only down for a little while, long enough for some of the smaller enemies to get in some scratches on him, before he tromped back up to keep trying.

It seemed that Celestia's spell had worked well, and had given his Keyblade a power akin to Bladecharge. This was indeed a luxury, and Eraqus used it to his full advantage, slicing through the horde of Heartless at an incredible rate of speed. At that point, even his own Spirits knew to get out of the way. Soon, there would be none left.