I honestly feel both Lee and Teasdale felt they could "stand out" more at Iowa than they could have at PSU. At PSU, it's a dynasty in the making. As long as Cael is there, they will never go very long without winning team championships. Cael will always bring in many of the nations top recruits and will always have a star studded lineup. They've won 5 out of the last 6 team titles.
Iowa on the otherhand have been struggling. Don't get me wrong, in the grand scheme of things they are always tough but they haven't been the team their fans expect. In Iowa, anything short of a team title seems to be a huge disappointment. They have been getting beat by PSU, tOSU and OSU in the recruiting battle and on the mat. That was unheard of back in the day.
I just think the allure of being two of the biggest reasons for a Hawkeye resurgence was too much for Lee and Teasdale to pass up. They could go down as the start of bringing Iowa Hawkeye wrestling back from the dead sort of speaking. Not that they've been dead but they sure as hell haven't been what their fanbase have come to expect. At PSU, Lee and Teasdale would just be stars among stars. PSU is already winning championships without them. With them they are just carrying on business as usual. At Iowa though, the two would be looked upon as THE reason Iowa is back. THE reason the championship is back to its rightful place. They could go down as "gods" in Iowa where as at PSU they might get lost among the Halls, Nolfs, Retherfords or Surianos.