Complex sentence: They inadvertently break up the prison riot and the grateful warden issues them a pardon.Laurel inadevertantly "razzes" the warden and their exit from the prison has to be a very fast one.
Split into simpler sentences: They inadvertently break up the prison riot and the grateful warden issues them a pardon. Laurel unintentionally "razzes" the warden and their exit from the prison has to be a very fast one.