A Dillinja remix? Uhh, can't say I am too impressed.
Vault is such a wicked tune, I am not sure if it really needs a remix at all. And if there is a remix, they should let a really really good remixer do it...like Fresh or Tech Itch (as was suggested by other people in the thread).
Dunno, I won't get excited about this until I hear it and its good...
when Trace played 'Back to You' by Pendulum at the end of his set, the MC (the black guy, can't remember his name) said it was something like a 'Trace personal remix of Vault', so this might be what you're thinking of.