"Not an option," Jason said, immediately. "We don't leave this room until you've seen it our way." He smiled again, just a small smile, but this was different. Before he'd been going for amiable, a decent guy having a chat -- almost jovial. He made no attempt to hide what he was really thinking now, how very much he would enjoy it if they had to spend some time together.
The Imperius curse was certainly an option, but neither Jason nor anyone else (last he'd checked) was experienced enough at it to feel comfortable with that yet. It was also a bad idea at this stage. They needed to build up the ranks before they had any use for mind-controlled grunts. Ideally, though, they could go in a chain. Imperius someone to imperius someone else to imperius someone else. Nearly impossible to figure out the origin that way.