It sounds to me like you got in line only an hour before flight time (35 minutes, then another 20 minutes, then the 11 minutes).

You were cutting it way too close. I really don't see how any of this was the fault of the airline. I personally hate it when they take somebody behind me in line who didn't show up with enough time and move them ahead of me. If you want to get through security earlier, then show up earlier, don't expect people to let you cut the line.