Possible Clues:

• Difficult to control
• Obstinate official gets player in line
• Unmanageable soldiers, spanner finally thrown in works
• Racer, forty (anag.)
• Hesitation about Stephen? Performer held to be stroppy
• Wilful brother coming from Italy in priest's place
• Stubborn, unruly
• Stubborn cook again to hold onto ham?
• Stubborn engineers throw spanner ultimately in works
• Umpire from motoring organisation on island is stubborn