Depends on how you read it Amber, but to me it seems they're fixing an issue, not giving us more flexibility. From the patch wording, it seems there were situations where people lived through Quarantine Measures, and it wasn't intended that way.
I don't know that it's a bug fix. Quarantine Measures in the enrage, it kills everyone when the timer is up. Allowing a few people to live through it doesn't sound like a bug fix to me, it sounds like a nerf.