yes the 2nd degree antspin stuff is real... the timing on it is atrocious..
with reverse spinning poi and fwd motions left normally leads under right ot the right side.. the trick is that left goes under right and then pushe back over it to the outside.. and as with normal spin the right poi just goes to the right side in its normal time.. but the extra bit of twisting means you can do a nice isolated antipsin weave anymore.. and that part makes it almost impossible.. or at least thats been my take for the past year or so..
I've stopped playing with it in hopes that cleaning up the rest of my antispin stuff will make the timing eventually click better.. since I think it -can- be done quite nicely.. I just dont practice it or anything else enough to do it though..
maybe nix can help
EDIT: cole..
take astraight arm butterfly weave with the reverse side on the right.. a 3bt version with the left arm straight and the right hand going over to the left... and do one with the right hand going under to the left..
thats the difference..

though I know that probably doesnt help..