Fence-sitter's position (7)
I believe the answer is:
astride
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fence-sitter's position</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for astride that I've seen before include "Straddling (horse)" , "With legs stretched apart - tirades (anag)" , "With feet apart" , "With one leg on either side, as sitting on horse" , "Not side saddle" .)