I'm assuming the part you called "butterfly" is the yoke (#9 on the diagram
). Remove the yoke by turning it CW while pulling away and check the motor shaft threads for damages.
If the shaft threads are OK, replace the yoke.
If the shaft threads are damaged, replace the auger motor.
- The yoke Part number: AP4072309
- The auger motor assembly Part number: AP4009036
Here are the breakdown diagrams and Replacement parts for MAYTAG MSD2757AEB Ref - SXS/I&W | AppliancePartsPros.com