The pilot knew there was gong to be a club activity there that day so he flew over early to secure a parking spot. Checked with the two local operators the best place to park so as not to obstruct their operations and parked away from the terminal within the clearly marked marked boundary of the parking area. Came back to find it had been pushed over the boundary line into the dirt.
The later arrivals simply decided that they wanted that spot so pushed the aircraft backwards off the designated parking area. They had about four people, witnessed and photographed by local operators, busy manoeuvering aeroplanes around the apron with tow bars. Fair enough move your own but just pushing other people's aircraft off into the dirt to make room for themselves...well if people here think that's acceptable then I guess they were part of that arrogant cohort.