It just occurred to me. BoVD is not as explicit as BoED on saying that corrupt spells cannot be used by good spellcasters, but every corrupt spell has the [Evil] descriptor, which means the same thing. Apart from that, the description of corrupt spells is pretty much the same as the sanctified's:

Spellcasters prepare corrupt spells just as they do regular spells, but corrupt spells are available only to spellcasters who prepare spells. Wizards and clerics, for example, can use corrupt magic, but sorcerers and bards cannot. A sorcerer or bard could, however, cast a corrupt spell from a scroll.
(...)
Corrupt spells are specific to no character class. Furthermore, they aren’t inherently divine or arcane spells; a divine caster casting a corrupt spell casts it as a divine spell, and an arcane caster casts it as an arcane spell.
As with sanctified spells, corrupt spells are on the list of a Warmage's spells known, they just need a way to prepare them, and be nongood, to cast them.

That right there is a reason to play a neutral Warmage! By being neutral, you can cast both [Evil] (corrupt) and [Good] (sanctified) spells!