A97: English is an imprecise language, but correctly punctuated, that sentence is correct for the way that the ability is used. If it said "...another, standard, action..." then it would be saying that the creature may take another action during the move, as long as that action is a standard action. It also says that the creature may not make a second move action, which would otherwise have been one of the possible choices from the menu that is available for a standard action.