If it looks like a duck, walks like a duck, and quacks like a duck, it's probably a Ponzi scheme.
Charlie Lee said that and I'm pretty sure it applies here. I don't doubt your miners are hard at work right now, too bad they are pointing to the pool and account of his choice. So not only is your miner safe and sound, he's making money off power you've prepaid for them. Do you really think anybody is going to leave profitable ASIC miners just sitting on the floor of the warehouse? There's alot of small companies running this kind of scam in the US. I have no doubt these guys had a business plan initially and it all just sort of took on a life of it's own after financial troubles/price of bitcoin going insane.
The guy is a lawyer after all. I'm guessing he made no commitments and SLA as to when they would be plugged in and for how long. $75/hour labor...my God. Hell has a special kind of place for people like this. I hope you all get what's owed to you, and at minimum your mining equipment back.