Voided corner, ref ruled? That's screwed up! (8)
I believe the answer is:
crumpled
'screwed up' is the definition.
(screw up can mean to crumple)
'voided corner ref ruled?' is the wordplay.
'voided' says to hollow out the word (remove centre letters) (void can mean to empty out).
'ref' becomes 'ump' (I've seen this in another clue).
'corner' with its middle removed is 'cr'.
'cr'+'ump'+'led'='CRUMPLED'
'that's' is the link.
(Other definitions for crumpled that I've seen before include "Wrinkly" , "collapsed" , "Creased, wrinkled" .)