Should be easy enough to achieve with existing batch updates & a bit of SQL, assuming that you want to delete all records where that individual is a recorder (i.e. including any records where there are other additional recorders.

First (make a backup!) modify (inserting the individual's name key) the following SQL and run it either in the linked Access database or in management studio

UPDATE
((TAXON_OCCURRENCE INNER JOIN SAMPLE ON TAXON_OCCURRENCE.SAMPLE_KEY = SAMPLE.SAMPLE_KEY)
INNER JOIN SURVEY_EVENT ON SAMPLE.SURVEY_EVENT_KEY = SURVEY_EVENT.SURVEY_EVENT_KEY)
INNER JOIN SURVEY_EVENT_RECORDER ON SURVEY_EVENT.SURVEY_EVENT_KEY = SURVEY_EVENT_RECORDER.SURVEY_EVENT_KEY
SET TAXON_OCCURRENCE.COMMENT = "DELETETHISRECORD"
WHERE (((SURVEY_EVENT_RECORDER.NAME_KEY)="Individual's NAME_KEY"))

Then use the batch update Del2 to delete all records with DELETETHISRECORD in the comment field
Then if required also run Del4 & Del3 to remove any empty samples and events

That's how I would tackle it anyway, I can think of a few other ways too though.