Mr Easiness managed the lucky avoidance of accidents (4,6)
I believe the answer is:
near misses
'lucky avoidance of accidents' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'mr easiness managed' is the wordplay.
'managed' is an anagram indicator.
'mr'+'easiness'='mreasiness'
'mreasiness' is an anagram of 'NEAR MISSES'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for near misses that I've seen before include "flying incidents" , "Close calls" .)