Hi, welcome here!
When I say "pulling apart" I don't mean like a physical pulling. It was more like my energy body was pulling away from my physical. It felt as though I had two left arms and one was pulling away from the other.
I have stuff like that from time to time, they tend to arise as a pretty natural consequence of physical and mental relaxation; I consider them to be strange experiences, and I kind of enjoy them while they last; in very rare occasions they become a bit too intense, and in those cases I just stop meditating. However, the vast majority of the time they are completely harmless, and the only reason why they are a problem is that you are scared. Now, bottom line is, unusual things are very much usual in this business and, unless they are clearly painful, there is no reason to be worried about them; obviously at first you are, because that's the natural reaction, but with time and repetition you become more confident and familiar, up to the point where you don't even consider them to be unusual, 'cause they became the new normal.
Fact is, I don't think there is a real answer like "This is this and it means that and you have to do this thing about it". You just stay with them, seeing how when you experience these things nothing horrible happens, but not overdoing it, like a kid that before jumping into the sea needs to feel the water a few times, feeling it and then coming back, and then feeling it a little more, until he understands that water is not dangerous, and then he can bathe safely.
Hope it helped somehow... bye!
PS: since these things are quite associated with relaxation, if you want them to subside (wich is not my first racomandation), you may try to adjust you posture to create a little bit more energy; so, if you lay down, you might try sitting; if you sit on a chair, you may try to do it without touching the chair with your back; if you sit crossed-legs, you can make use of the abdominal muscles and the back muscles to make your position a bit more straight... these kind of adjustments should be more than enought to make them subside.
Edited x2