Who was the guy that Osborne hid the gun for?
Think your thinking of Barry Switzer.
Tyrone Williams
Tyrone Williams, a senior cornerback, was charged in March 1994 with two felonies—unlawful discharge of a firearm and use of a weapon to commit a felony—in connection with a Jan. 30, 1994, shooting. Police say that Williams fired two shots into a car occupied by former New York Jet safety Kevin Porter, who was in town visiting friends. Porter was not hit. After the shooting, but before Williams was charged, then-Nebraska assistant Kevin Steele was given Williams's .22 caliber revolver. Then Steele and Osborne locked the gun in a cabinet.
Lots more to be found in this 1995 SI article: Coach and Jury
As for the TO interfering in a criminal investigation, despite what castusboy says, that all arose from an SI article that contained a misquote, an out and out lie, or an intentional error by SI, take your pick. Lancaster County DA Gary Lacey accused TO of not producing a gun used by Tyrone Williams. However, even Lacey later admitted that TO hadn't been involved in the gun incident, the it had been Kevin Steele who had been involved. That led Steele to sue Lacey for defamation, since as it came out in the documents filed with the court (prior to the case being dismissed on a technicality) the LPD AND the UNL campus police knew exactly where the gun was at all times from the moment it entered Steele's possession. The only confusion occurred when a LPD detective showed up to pick up the gun, Steele was out of town picking up signed LOI's (this was back when coaches could do this, and the incident involving the gun had occurred the night/early morning of Jan. 31/Feb. 1, right before LOI day). No one was available with a key to the cabinet in Steele's office where the gun was stored, and so the detective had to come back a couple of days later to get the gun. That was the only "interference" with an ongoing criminal investigation, and it involved Steele, not TO.