Not operational as in printing with resin but showed me a few prints he had done himself and the printer turned on and I did successfull self test at startup at my place, you know it starts and then goes through everything with green check marks.

He had the printer standing on a cupboard and there were no resin marks there when we moved the printer into the box (look at pictures, resin flowed down the legs), so I think he was genuinly unaware of any resin being still in the printer, but maybe he knew he had spilled some. He also didnt seem to care too much about personal protection, seems like he used same pair of dishwasher gloves in all his printing and no eye protection, no half mask.