The Cursed glade space reads "Strength and Craft derived from Objects and Magic Objects does not count on this space, nor may you use Magic Object or Cast spells".
Now.. I've always assumed that if you encounter the cursed glade you cant cast spells until you move away.
But.. If someone else attacks you there that person does not encounter the Cursed Glade (same goes for Desert) so can that person cast spells etc but not the player who is attacked?