Run away and don't look back. I didn't use those exact words but I didn't mince words either. I told them it was a mess and give them the option to end the inspection right then and there. I offered to knock $100 off the fee as I hadn't gotten into the rest of the house yet. They discussed it and opted to forge ahead with the rest of the inspection. They were probaly looking at $20,000+ in repairs just in the crawlspace.