We had a Bushmaster come in the other day with the empty chamber indictor broken just like you mention. We locked the bolt back and used a cleaning rod to ker-thunk it out. It was in there fairly tight but it came out with a little persuasion with the cleaning rod. By other’s logic I guess that means you don’t buy Bushmaster either?
Best advice: relax, don't panic, and don't make a mountain out of a mole hill. Getting a chamber flag out of the chamber is not rocket surgery.