Oust a silly dope with some ease (6)

I believe the answer is:

depose

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'oust' is the definition.
(I know that depose is a more specific form of the action oust)

'a silly dope with some ease' is the wordplay.
'a silly' is an anagram indicator.
'with' means one lot of letters go next to another.
'some ease' becomes 'se' (this might be a standard abbreviation which I don't know about).
'dope' is an anagram of 'depo'.
'depo'+'se'='DEPOSE'

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(Other definitions for depose that I've seen before include "Remove from power or testify on oath" , "Oust or unseat" , "Oust in epodes" , "Dethrone; bear witness" , "Remove (from high office)" .)

I've seen this clue in the Evening Standard.

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