Odd piles, curiously off balance
I believe the answer is:
lopsided
'off balance' is the definition.
(thesaurus)
'odd piles curiously' is the wordplay.
'curiously' indicates anagramming the letters.
'odd'+'piles'='oddpiles'
'oddpiles' is an anagram of 'LOPSIDED'.
(Other definitions for lopsided that I've seen before include "Leaning over, askew" , "Unbalanced" , "With one part lower or heavier than the other" , "Crooked" , "Not symmetrical" .)