The strangest thing....clicking forward expecting to see the punch up but he was just running towards the line so either....
a) got the hump and wanted to stop the other one from winning
b) got the hump and wanted a shag....
c) new version of the up and personal tow
d) first rider had swallowed something, choked and the other performed the hiemlich procedure
e) the new fad of cycle cleat sk8ting by being pulled along
f) slipped and didn't want to damage his new £150 Assos bib shorts