Drug users mistakenly freed in talks (5,6)

'drug users' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'mistakenly freed in talks' is the wordplay.
'mistakenly' indicates anagramming the letters.
'in' indicates putting letters inside.
'talks' becomes 'speaks' ('speak' can be a synonym of 'talk').
'freed' anagrammed gives 'eedfr'.
'eedfr' inserted into 'speaks' is 'SPEED FREAKS'.

Can you help me to learn more?