Haha you got hosed.
Read the ordinance rules they cover how direct fire scatters, how it scatters more with movement, how indirect scatters and howit can'tbe fired if it moves. If anyone had a rulebook I don't see how this could have been overlooked.
Now if he meant that that specific tournament had a rule for direct fire than you should have been made aware of that ahead of time when you signed up.