What a pain in the arse mate, hopefully you can get it all sorted out without too many dramas.
If you are still in Mt Gambier I'd be taking it back home again, even for the dramas of getting it out of his house, heaps easier to sort out at your home. 
Then let him put it in his truck, I'll give you a hand to lift it up into there if you need mate, saves your time and petrol money.