I have a fix for this spell that the devs can use. Change these in the tremor spell and you will get the dodge set to 0 for a duration of 3. Not sure why the calculation method of adjust unit stat wasn't working, but here it is.

<GameModifier>
    <ModType>Unit</ModType>
    <Attribute>SetUnitStat</Attribute>
    <StrVal>UnitStat_Dodge</StrVal>
    <Duration>3</Duration>
    <Value>0</Value>
</GameModifier>

https://dl.dropbox.com/u/75549875/Fallen%20Enchantress/Abilities/TremorFix.zip

A file with the spell tremor and the fix applied. (Yes it will work if you put it in your mod folder)

I'm not sure why the calculated method wasn't working, that is something for the devs to look at (yes this fix should work for fallen enchantress as well)