I think that with cheats enabled there is a way to "cleanse aura" or something like that (ctrl-R?), it fixes odd things like permanent blindness and the like.
I've had a similar problem happen w/o tactics, can't remember exactly where, but I ended up needing to recast the contingencies even though they showed up on the portrait--but the ability wouldn't light up.
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"Many are my names in many countries. Mithrandir among the Elves, Tharkun to the Dwarves; Olorin I was in my youth in the West that is forgotten, in the South Incanus, in the North Gandalf; to the East I go not"
--The Two Towers
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