Ok, false alarm.
Several larger-than-life-sized bobble heads were placed around downtown Detroit by Fox Sports Detroit for their "April in the D" initiative.
The bobble heads were supposed to be removed on May 1.
UPDATE: The head was found in Allen Park
Jimmy Howard bobblehead head has been located in Allen Park. One person in custody.— Eric D. Lawrence (@endangeredlaw) May 1, 2014
Hometown? Farmington Hills