If its a long term situation, probably worth considering. If its a short term project, I'd be more inclined to just dump into an Access db, let them clean away, then just do an update back joining on the primary key. Whether that works depends on how much the data is going to be altered before they finish cleaning and update back.

I'd have to check again what the restrictions on Personal Edition are, just to be sure. You could do transactional with immediate update or merge is this situation, transactional less invasive on your primary system.