The Chida (based on the Maharikash) permits opening a Torah and acting on the first verse that comes up, basing his ruling on the story of Yoshiahu who found a Torah rolled to a verse.

PS. He came before the Gra, so "Gorel Hagra" technically is a misnomer.

What is the Gorel Hagra?
Is it possible to enter @nickname in comments, automatically? Or is one just supposed to write out the names letter by letter?
