Saintly men let loose in touching way (13)
I believe the answer is:
sentimentally
'in touching way' is the definition.
'saintly men let loose' is the wordplay.
'loose' indicates an anagram (letters are loosened from their original positions).
'saintly'+'men'+'let'='saintlymenlet'
'saintlymenlet' with letters rearranged gives 'SENTIMENTALLY'.
(Other definitions for sentimentally that I've seen before include "in mawkish fashion" , "Sloppily" , "in nostalgic way" .)