As someone who watched the majority of the Leszno GP from the pits, Olsen didn't seem to have much to do with track prep. It seemed to all be done by the locals.
People (from their living rooms) were complaining about the track being slick but I can assure you there was plenty of material down, the problems seemed to come from a lack of water. Something which no doubt contributed to yesterdays problems with ruts. It seems they are scared of over watering something which I believe comes from the aborted Sedish GP a few years back.