Clan_Lunaire: After I punished the demon queen and her minions, and she run away opening the blue portal my team is stuck in combat mode even if there's no ennemy around anymore.
Consequently , I can't pass the portal and if I use the console to radius kill all ennemies, then it kills the Demon Queen definitively and Raymond arrives.
I believe this had to do with a summoned spirit (or mummy to be more precise) that escape from Gobbet's control and that I had to kill after the queen's minions interrupting the sequence.
Is there a solution for me to play the outer dimension's fight that would not involve using an old savegame ?

squid830: Not really - afraid using saves is the only way to "rewind". You can easily rewind from the last autosave. I can't remember how that level was scripted, but there could even be an autosave just before that part (just rewind till you find it).