One of the issues raised as to why Yanukovych should be prevented from going back to his office is that he and his cronies might loot the government some more. It was alleged in a report a couple of days back that he and some others had succeeded in having some railroad cars transferred over to them and in getting a deal for carriage that gave them something like a 30% discount. They would of course transport goods or passengers for the standard fee and pocket the rest. This is alleged to have happened under Kirpa's watch and months ago, but there still might be some other things he and his could get their hands on.
To keep him from his office might be to keep him from getting more swag.