You are making the wrong assumptions. Were you listening to the radio transmissions? What most probably happened is that the EZY was cleared to line up and probably take-off too. Once on the runway the FD crew had a good reason (could be one of many) not to commence their take-off and reported this to ATC. With an aircraft inbound ATC instructed EZY to vacate the runway. Whatever caused the EZY crew not to continue with their take-off was rectified and they joined the line again.
Last edited by Hotel Tango; 11th May 2012 at 13:00.
Reason: WingoWango pushed the submit button before me.