Possible Clues:

• Peg held up by affair that's brief
• Brief spree involving back support
• Transient affair involving headless runners?
• Short-lived navy beheaded John, perhaps
• Lasting for a brief time
• Transient supporter turned up to invade pitch
• Brief run can end in jog
• Ships in Gateshead gone tomorrow?
• Rapid and transient
• Fugitive getting away with time inside