Met some weird teaming players in Asylum Life

How should I put this? It was kinda weird. So, like usual, I picked the guard job in that crazy game where you can only use max level skills. I always get servers with fewer players, so I was peacefully completing missions. Then, I took down some hostile player, and right next to them, 3 players who looked like they were teaming up came and started ganging up on me. I got trashed at first, but thanks to my moves honed in MM2, I eventually started winning. But then the teamers kept increasing, from 3 to 5, and it got tough to fight. My job team only had 2 people, no healers, and on top of that, a zombie event started. Luckily, I managed to clear them out with a special weapon from the game. But the teamers kept coming, a mob of 7 to 9 people swarmed us, and we were pushed back to the office. Then, my job team and I threw electric grenades, but that didn't work either. So, my job teammates all joined the teamers. Getting really pissed off, I started taking them down one by one. As I started winning, the teamers' teammates switched to my side, leaving that one teamer all alone. Talk about switching sides to the winning team!