Possible Clues:

• Careers masters forced to take care of PE department — that's not right!
• Where wild animals made steps furiously?
• Horse races?
• Headlong rush of crowds
• Stock control impossible during such rushes
• Having to put your foot down on the bits of seed, one runs away from it
• Mat's back at speed in a runaway way
• Put one's foot down before one runs away with the seed
• Flights of frightened cattle
• Headlong rushes of animals