One of two AWOL, servicemen seeking sanctuary in Boston University's Marsh Chapel turned himself over to the authorities Tuesday night with the aid of a B.U. student.

Marine Pfc. Thomas Pratt escaped in disguise through a rear door of the chapel while SDS students and members of the resistance planned to protect Pratt and the other servicemen in sanctuary by surrounding them with a human wall.

It was the second time in a week that a Marine in student sanctuary rejected the Resistance in favor of official surrender. Last Wednesday Paul Olimpieri, given refuge in Andover Chapel at Harvard Divinity School, accused Divinity school students and the New England Resistance of using him as a tool to publicize their own goals.

Olimpieri urged other servicemen to use "proper channels" for their dissent.

John Galla, the B.U. student who assisted in Pratt's escape, visited Pratt and the other AWOL servicemen, Raymond Kroll, in Marsh Chapel Tuesday. Accordin to Galla, Pratt said then that he did not want any part of Resistance demonstrations, but wanted the opportunity to express his personal feelings about the war.

After Pratt's disappearance a crowd of about 1000 gathered outside the chapel. Resistance members chained doors at the rear and sides of the chapel to keep out police and protect the remaining resister.