Which spoiler site came up with the fingers-cut-off rumor? Or did they all?
They (Survivorfever) already have who will go on episode 8. They have many tidbits like first juror, makes the merge, mid to late jury, mid to late game etc. I believe there is only one more to be eliminated before the merge happens and then the jury begins.
I take the spoiler info with a grain of salt though. There is one survivor who I won't name that has been rumored to be anything from mid juror to eventual winner so that leaves a lot of leeway. I have found other sites that have detailed screen graphics and they had to come from the actual footage which means someone at cbs or this production leaked them. An example of this was the tribal shift where they had screen captures of the new tribes before the show aired.