Really annoying spell scripting issue - Bug?

[Networkingguru]

vfb said:
If the opposing army is not considered strong enough, spells that use gems will get scored down. If you've got Wind Guide as spell 1, and it gets scored down, your choices for spells 2 to 5 are not considered. It will just use the highest scoring spell that it found when it computed the spellscores for your caster in round 1. Most unfortunately for your archers, that was "Touch of Madness".

I guess that makes some kind of warped sense, but is there any particular reason ToM is scored so high? I can't imagine a single situation in which that would be my first pick for a spell.