I think what he meant by poor planning on your part was that you called Spec and told them you needed a clutch ASAP instead of ordering it a week ahead of time since you most likely knew that your car was going in for repair a while before you actually ordered the part.
In retrospect what would have happened if Spec had told you the part was out of stock and it would be 2 weeks before you could get it? That's what he meant by poor planning.
Rick