The article is terrible. Who exactly coerced Lackman to answer arbitrary questions? Who was his lawyer? When did his lawyer arrive? Who threatened Lackman with contempt or court?

I've known the parties to a couple of Anton Piller orders and I don't believe there was any questioning. Anton Piller orders are essentially a civil search warrant to seize evidence. Go in, take the items sought by force if necessary and hand them to an independent lawyer who will keep them. The defendant or someone representing it if it's a corporation has to be there to witness it and be given an inventory of what's taken. There's no scope for questioning anyone.