Stuck in T4 Olroth phase 2

I always push Olroth into p2 with 1 attack, but somehow I actually killed him in p1 and bypassed p2. I am now stuck in the arena, with the mobs endlessly spawning from the portals. I can't get out. I can't open a portal. I've tried relogging to character screen and even rebooting PoE 2 completely and waiting a while. I log back into the Olroth arena.

this just happened to me AGAIN for the record. Haven't experienced this all league and the # of Olroth's I've done is silly.

HAPPENED AGAIN. Getting really tired of this. The only fix if you have no one online to invite and TP to is to log out for 10-20 minutes and wait for instance to reset.