Indeed, they "can use" the sanctified spells, which means they can cast them (because otherwise you can't use them.)

At best you could argue that they don't gain the ability to use them until 5th level, when they get the "can use" ability. Even if you read it that way though, there are non-sanctified spells on the exalted spell list they can take instead - and indeed, you should be taking those (if not the normal spells from your entry class), since at 5th-level you get all the sanctified spells for free anyway.

Quote Originally Posted by Troacctid View Post
Gotta disagree with you there. First off, it doesn't add them to your spells known, it just lets you cast them as if they were among your spells known. (It's a subtle difference, but it means you can't do stuff like swap them out for different spells when you level up or use them to power a dragonblood sorcerer substitution level.) Second, it clearly constitutes an exception to the general rule that spontaneous casters can't cast sanctified spells, and exceptions have the highest priority when rules conflict with each other.
Note that you can actually add some of them as spells known through the Exalted Spell List feature. (Generally, you shouldn't, but you can.)