Hi Soulreaover, I do not think it brings you more complication to change the pulley, which if I point here, that it is not normal for this "crooked", try to tighten the central bolt of this, it was not that it is loose, if it is not so, when it is clear, you will have to check the bolt is not folded, and the state of the washers (if it carries).
Here I send you a drawing of how the belt goes in case it serves you. Greetings and that is good !!!