Forum:Underdome: Wave 3.5?

i was playing online with a mate and we were on round 10 wave 3 (the Horde wave) and it suddenly ended after about 7- 8 kills in, then change to the next wave. However as it was doing the ammo drop and moving on to the next round a load of lunatics spawned whist loading up the next wave. Has this happened to anyone else? major glitch ? this is for 360.