This glyph looks like a mix between GD16 and a character that is not (yet) included in my catalogue. GD16 seems to represent vai ora a Tane, of that I am fairly convinced, but what about the other part?
 
The observant reader has already found part of the answer in GD81. Though the glyph must then be oriented 90o to the right:

in order to make the similarities become more obvious:

 
There is no middle 'leg' in our glyph and - due to the new orientation - the 'flames' are bent the wrong way. Otherwise quite similar. And also the missing central 'leg' could of course be absent due to the difference in orientation.
 
There is a sequence incorporating GD81 without eyes. But in another sequence GD81 has eyes. The latter sequence seems to signal 'double' in different ways. I don't know where these sequences are beginning and ending. Further studies are needed.
 
However, the pair of 'closed fists' should be possible to decipher, so we will continue with that.