Tigerfish,
I think you make a good point about the degree of granularity concerning the police communications, but I do not know where you have picked up the idea that the aircraft elected to hover over the pub. As I read the AAIB report, everything which took place over the pub could be described as involuntary. The diversion referred to during RTB took place further east, and my own pet theory is that they became involved in a vehicle pursuit, as the track of flight matches the motorway network closely. Quite why there is no insight provided from the police communications channel , I do not know, but it does seem odd when contrasted with the details provided re the earlier search of the railway line, which clearly had no bearing on the eventual tragedy.