Removing HOLD on an email address throws fatal DB error

To recreate, edit a contact record and check the "Hold" checkbox and save.
Then edit same contact and uncheck "Hold" - you'll see this fatal error:

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Database Error Code: Incorrect datetime value: '2010' for column 'hold_date' at row 1, 1292

UPDATE civicrm_email SET contact_id = 105 , location_type_id = 1 , email = 'scout@foobar.org' , is_primary = 0 , is_billing = 0 , on_hold = 1 , is_bulkmail = 0 , hold_date = 2010 WHERE ( civicrm_email.id = 95 ) [nativecode=1292 ** Incorrect datetime value: '2010' for column 'hold_date' at row 1]
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NOTE: Not sure why the query is updating on_hold = 1, since I've actually UNCHECKED the Hold checkbox. Query is definitely passing incomplete date string ('2010'). You may not see this error is your MySQL settings do not have sql mode = STRICT_TRANS_TABLES.