Reach: Spawned Outside The Battlefield (Xbox)

I joined an 8v8 BTB heavies on long spear in Reach. At one point during the game - when my team was winning - we all started spawning at the far end of the map outside of the shield that blocks off the battlefield. Eventually we started spawning within the battlefield again, but not before losing 20 points due to “suicides” and ended up losing. Please fix.