So either
1) I fake outed jonti and got really lucky.
or
2) The 'seer' I've been in touch with was jonti's packmate and sold him out. Something tells me he wouldn't have gone so quietly in this case.
3) The Sorc got super lucky, scanned a wolf from the first pack on Night 1, scanned jonti on Night 2, and gave his name to the first pack who then contacted you as the seer and had you out Jonti.