Ernie Wilson, Eskimo or not, would've been playing football at a college in the lower 48 or Hawaii. No college in Alaska (not even Alaska-Anchorage or Alaska-Fairbanks) has a gridiron football program for obvious reasons.
A college quarterback of Ernie's fame would have been drafted by a specific NFL team, which Oscar would know, He would not need to hide Ernie from all the teams trying to sign him.