Needs hem altering, being tangled up (8)
I believe the answer is:
enmeshed
'tangled up' is the definition.
(I've seen this in another clue)
'needs hem altering' is the wordplay.
'altering' indicates anagramming the letters.
'needs'+'hem'='needshem'
'needshem' anagrammed gives 'ENMESHED'.
'being' is the link.
(Other definitions for enmeshed that I've seen before include "Caught in as in net" , "Caught (in problem or snare)" , "Tangled up, snarled in" , "Trapped" , "Entangled" .)