What does the cryptic crossword clue "Help me claw off what's clinging and won't let me go (5,5)" mean?

The wordplay uses an anagram. anagram of HELP + ME + CLAW = WHEELCLAMP The answer is WHEELCLAMP.

Help me claw off what's clinging and won't let me go (5,5)

Guardian Cryptic #23947 | 14 Down | 2006-12-12 flower