Spins records for the Christmas season heading off with Shatter (8)
I believe the answer is:
splinter
'shatter' is the definition.
(thesaurus)
'spins records for the christmas season' is the wordplay.
'spins' says the letters should be written backwards (I've seen 'spin' mean this).
'records' becomes 'lps' (LP is an example).
'for' says to put letters next to each other.
'the christmas season' becomes 'inter' (I can't justify this - if you can you should believe this answer much more).
'lps' reversed gives 'spl'.
'spl'+'inter'='SPLINTER'
'heading off with' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for splinter that I've seen before include "Break into fragments, shatter" , "Sliver of wood, sore in the flesh" , "Thin sharp piece of wood or glass" , "Thin needle-like piece" , "Long thin fragment" .)