Minnesota is missing Tom Batty (6)

I believe the answer is:

insane

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'minnesota is missing tom batty' is the definition.
I can't tell whether this definition defines the answer.

'minnesota is missing tom batty' is the wordplay.
'is missing' is a deletion indicator.
'batty' indicates an anagram.
'minnesota' with 'tom' taken away is 'innesa'.
'innesa' anagrammed gives 'INSANE'.

Can you help me to learn more?

(Other definitions for insane that I've seen before include "Mentally unhinged" , "Eg, gun or knife" , "Out of one's mind" , "reckless" , "without any reason" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).

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