Slow down when reporting John's last minute escape (5,5)
I believe the answer is:
break loose
'escape' is the definition.
(synonyms)
'slow down when reporting john's last minute' is the wordplay.
I cannot really understand how this works, but
'john's' could be 'loos' (both can mean a toilet) and 'loos' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for break loose that I've seen before include "Go and escape" , "Burst forth" .)