Has there been any official word on Twin Soul?

[Drakim]

Twin Soul:

At 10th-level, if the witch or her familiar is gravely injured or about to die, the soul of the dying one immediately transfers to the other’s body. The two souls share the surviving body peaceably, can communicate freely, and both retain their ability to think and reason. The host may allow the guest soul to take over the body temporarily or reclaim it as a move action. They can persist in this state indefinitely, or the guest can return to its own body (if available) by touch, transfer into a suitable vessel (such as a clone), or take over another body as if using magic jar (with no receptacle).
This replaces the witch’s major hex at 10th-level.

There is no lack of threads discussing Beast-bonded Witch's Twin Soul on the internet. Especially the lack of a Magic Jar receptacle and what it means.

The general opinion seems to be that because there is no receptacle, the victim's soul just dies, being forced out and having nowhere to go (as specified in Magic Jar: "Any life force with nowhere to go is treated as slain.").

That's cool and all, but I don't think my DM would let that logic fly, he would definitely want something more substantial than that, especially when such an interpretation goes so much to my character's advantage.

Or alternatively, if there is no official word on this, are there any spells or magic items I could use to "remove" the enemy's soul so that I could inhabit his body freely without any soul arguments?

(and last bonus question, if I am in a new body, and my familiar dies, can his soul jump over to me in this new body that isn't strictly speaking mine, or does he just die?)

[Diego Rossi]

There are a few creatures with a similar ability. The Dybbuk Malevolence is one of those, the shadow demo SLA Magic Jar and so on. They don't use a focus, so there is no receptacle for the soul.
As those abilities aren't meant to be "instant death" effects your GM should chose what happen. To stay in line with the literature and films about possession, the most common interpretation is that the owner soul stay in the body but it is powerless and/or dormant.

[Drakim]

That makes sense, the action would be like some sort of possession, not soul swapping.

But that still leaves me with questions like, if the new body you are temporarily possessing dies, do you die with it or do you get flung back to your familiar's body like before?

And likewise, if the familiar dies, can your temporary body house it's soul as long as you are in control of it, or does the Twin Soul power not function when your original body is not functional?

[DharTook]

Magic Jar wrote:

You keep your Intelligence, Wisdom, Charisma, level, class, base attack bonus, base save bonuses, alignment, and mental abilities.

The indication I get from this is you are a witch with the Twin Soul ability in your new body, and therefore the death of you or your familiar triggers its effects.