They should have sent a buldozer round the track to shovel them all up.
This just goes to prove that all theseeco nutters are insane and should be locked up to protect us from them and for their own protection as one of these days one of them will get seriously injured or killed while carryng out their stupid actions.
If the marshals can remove them from the track so easily then why can't our police remove them from the motorways and other roads they glue themselves to?