Not sure I'm reading this right.
Is it, "while the aspect exists, you may tag the aspect to dodge with Intimidate" or "once you've used the tag, you may dodge with Intimidate until the Aspect is removed"?
If the former, it's way too weak. If the latter, it's not terrible. But to be honest, I think I'd allow it without the use of the tag. "You may use Intimidation to dodge attacks made by characters who have Aspects reflecting their fear of you" doesn't seem broken.