Nick,
I totaly agree with Doug.
To be on the safe side, after best attempts at dry removal, I would pre-treat the carpet with a misting of a cationic surfactant such as Prochem A217 Ultrapac Renovate to neutralise static bond.
Aggitation with a contra-rotating machine such as the Host will lift some resudue, then an extraction rinse, preferably with a power wand should get as close to total removal as practically posible.
John.