Use Stop just for that purpose. Before that group comes up, try to have Sora's highlight prepositioned on the Magic menu's Stop command. (Probably not worth a Customize spot.) Waiting for Stop to wear off is faster than awaiting depetrification.
Sora's MP equipped for at least 12 makes a world of difference over 11, BTW.
Good time. :j The wizards are a pain. --- Guides and other contributions: http://www.esque.com/slr/gamefaqs/ FFX, FFXII, KH, KH Re:CoM, KH2, Okage: Shadow King, Secret Agent Clank