puppet moving in scene without input

Hi all,

I'm going crazy. I have this rigged puppet in a scene that is doing a weird glitchy dance without me inputting anything and I can't make it stop. Does anyone have any idea what might be causing this? 

Here's a screen recording of what it looks like:
https://drive.google.com/file/d/1-uuf_xRkx9sT9LXvJ-bA75C2VBoHXxQa/view?usp=share_link

it happens even when my camera is off. It stops only when I switch off 'Arm for record' on the character in the timeline panel. Disarming everything in the propoerties panel does nothing. I'm so confused. Any help would be greatly appreciated. I opened it on my crappy MacBook and it didn't have this issue.

I'm running a 27" iMac with Monterey and Adobe CA v23.1 (build 79).

This is my hardware overview:

  Model Name: iMac

  Model Identifier: iMac20,2

  Processor Name: 8-Core Intel Core i7

  Processor Speed: 3.8 GHz

  Number of Processors: 1

  Total Number of Cores: 8

  L2 Cache (per Core): 256 KB

  L3 Cache: 16 MB

  Hyper-Threading Technology: Enabled

  Memory: 64 GB

  System Firmware Version: 1731.140.2.0.0 (iBridge: 19.16.16066.0.0,0)

  OS Loader Version: 540.120.3~19

  Serial Number (system): C02F81QUPN7C

  Hardware UUID: 33D65ACB-C51A-5605-BE14-F21A7AABB284

  Provisioning UDID: 33D65ACB-C51A-5605-BE14-F21A7AABB284

  Activation Lock Status: Enabled

Below are soem screen shots of the panels: Properties, timeline, rigging.