Clue: Held in used complex, having lost one's bearings? (10)
Answer: UNSHIELDED
Explanation: Held in used complex, having lost one's bearings? (10)
***(held in used) **[anag:*complex*] 
*Not convinced by this, as "unshielded" and "having lost oine's bearings" are not synonymous as far as I can tell.