I had been told about it, but only last night did I watch it. Edvald Boasson Hagen looks like a choir boy but is actually swinging a fist at the end, and then gets on in the ribs from Matt Goss.
Sadly, the CyclingCentral sharing code has got a bug, so try the link below.
http://www.sbs.com.au/cyclingcentral/video/2215189886/argy-bargy-at-gent-wevelgem-finish