"Just when I thought I was out, they pull me back in" -- Just as I was heaps happy about eleiminating the shudder in the front wheels and having the car back on the road again - comes this --> I drove the mini to work on Friday and parked it semi - legaly next to my bar by a construction site in the city - where "someone"

has blackened out the "No Parking" signs. It used to be my secret spot but now everyone parks there but I still managed to squeeze in.
Get back to the car at 4am with some mates, about to drive home and its standing atleast 3 metres from where I parked it with the wheels turning in the direction it traveled. My first thought "drunk ****" tried to move it = massive panel dents, ripped trim etc = $3k in panel beating bills. On closer inspection it wasnt as dramatic. The damage was limited to the right hand side.. But the fact that there were no dents in any of the gaurds and no damage to any other side suggests against it having been picked up.
The immobilser was on and the alarm wasnt activated so probably no one got in. But the car was still draged for 3 metres, plus the sills were covered in a multitude of small scuffs in two spots on the right hand side and the paint just along the sills was scraped off again in two spots. Plus the clamp on the exhaust appprox in the middle of the remote - has been almoust ripped off ( I know for sure it was fine at the start of the day).
I've been generaly lucky so far with parking the car as nothing has been scratched or brocken before (apart from one small incident) - and the damage is not nearly as bad as I feared, plus some Magna that parked across the construction site gates had all 4 tyres slashed - so it could've been worse - but this whole thing puzzles me. The damage is almoust as if a careless forklift dragged my car (as its two distinct spots plus the flare) - but I doubt the construction site would have a forklift, plus I wasnt really blocking any of their access points - And I fail to see how any other car could have damaged the sills, but nothing else.
Any ideas>?