Most welcome Parker,
Yes I think I see the reason for the strange walking.
I believe the Human Event isn't created at the correct time-point.
It should occur after the human has grasped the device.
Now instead it seems to occur at the very start of the simulation.
You can see that the device turns purple at time = 0
This indicates that there is a follow object relationship established at this time.
This is the hand to device relative object which the constraint engine later tries to preserve, resulting in strange reach actions.
Please try moving the event to occur once the hands are properly on the device.
I hope this helps, let me know - thanks!