Im presuming this pose has something to do with opposing spirals. however i thought this is common knowledge within aikido in general but not many practioners replicate it?? or i could just be presuming wrong? any thoughts
It's not common knowledge at all in the wider aikido world. It's been discussed a lot on Aikiweb, but even here when the idea was first introduced it was not understood or accepted.
Calling the lower hand "dangling" suggests complete ignorance of what's really going on there.