The attorney for Washington Redskins wide receiver Duane Gunn, who was arrested last weekend in an Indianapolis nightclub incident, told a judge today that Gunn was out of town "on an emergency," court records showed.

William Hawkins, Gunn's attorney, asked for a continuance in the case until Sept. 5 because of the "emergency in Harrisburg, Pa." The Redskins train 20 miles from Harrisburg.

"He had to go out of town on the spur of the moment, didn't he?" Hawkins said tonight. "I didn't know any other term to use."

Judge Taylor Baker of the Marion County Municipal Court granted a continuance until Thursday at 9 a.m. Hawkins said he would ask for more time at that arraignment. Gunn will not appear in court, Hawkins said.

Gunn, who practiced with the Redskins today, refused to comment on his arrest.

He was charged with resisting arrest and disorderly conduct after he allegedly shoved a bouncer's head into a glass door after refusing to leave the nightclub. The police report said Gunn appeared "to be under the influence of some type of stimulant."

The Redskins waived linebacker Mike Thompson, a free agent from North Texas State, and signed punter Jon Peterson of St. Stephen's High School and Middlebury (Vt.) College.

Promising rookie linebacker Ricky Adams, a free agent from Oklahoma State, told defensive coordinator/linebackers coach Larry Peccatiello he was "tired of playing football" and left for home.

Guard Steve Reese, a free agent from Clemson, remained a mystery at training camp. He didn't show up today and the Redskins can't find him . . .

Tight end Clint Didier's new contract is for $275,000 this season and $305,000 in 1987, it was learned.