It's amazing that the second guy hit the deer too, then went through the rough stuff for what looked like 100 yards or so, but still kept the rubber side down...
Do you think the second guy was still on his bike after he hit the deer? It looks to me like he was thrown off because of the way the bike keeps rolling and once back on the tarmac doesn't start braking. Also look at the damage to right side of windshield, like he hit it as he came off! Dunno might be wrong but I reckon he was thrown off