Springbonnie just sat on the Chair, considering Springlocks to be in Control. and Yep, Springbonnie is the Only Suit in Freddy Fazbear's Pizzeria (1993, FNAF1), became Alive in Fredbear's Family Diner (FNAF4). Here's a theory: Springbonnie is a Little bit of... inside Animatronic World!
Springbonnie activated Springlocks!