Team sped about in headlong scramble (8)
I believe the answer is:
stampede
'headlong scramble' is the definition.
'team sped about' is the wordplay.
'about' indicates anagramming the letters.
'team'+'sped'='teamsped'
'teamsped' is an anagram of 'STAMPEDE'.
'in' acts as a link.
(Other definitions for stampede that I've seen before include "Uncontrolled rush" , "Beastly charge" , "Panicky run" , "Sudden dash of a group of startled animals" , "Headlong rush of a group in panic" .)