Well, I think this is clearly a rulings-not-rules case.
The raw for the spell assumes a cleric (it is on the cleric spell list).
A) Clerics specify a deity, but bards do not.
B) When clerics gain things like "fireball" from domain spells, they are considered Cleric spells
C) When Bards gain spells like "Word of Recall", they are considered Bard spells
The question then, which is more specific? Word of Recall as a Bard spell (and thereby bypassing references to deities) or the language of the spell itself?
The raw for the spell assumes a cleric (it is on the cleric spell list).
A) Clerics specify a deity, but bards do not.
B) When clerics gain things like "fireball" from domain spells, they are considered Cleric spells
C) When Bards gain spells like "Word of Recall", they are considered Bard spells
The question then, which is more specific? Word of Recall as a Bard spell (and thereby bypassing references to deities) or the language of the spell itself?