#1: How do you know this, can you look inside the mechanism of the disc?
#2: In your theory they must have build in 2 separate 'stop' mechanisms which they enabled when the 'string' snapped;
#1: we can witness the VERY FAST REBOUNDING for the first 2 bounces -- they are actual "Bounces" indicated by an IMMEDIATE CHANGE IN DIRECTION.
Then it begins to operate like a pendulum... before each reversal there was a deceleration then acceleration... it slowed down, stopped, then reversed.
We can see this clearly from the video.
#2: In my theory, the "guide wire" was "makeshift" to try and fix what they forgot to do from Apollo 11 (which was to have it track earth at all).
So this model wasn't just cheap plastic -- it could have been a real AM... or a model with some mechanisms inside. Perhaps the ONLY thing they had on this armature was an electronic "brake" of some sort... that just "held in in place".
They didn't think up this "guide wire" technique until Apollo 12, yet still used the same module as Apollo 11.
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My hypothesis is that NASAX was largely a Military-run operation... the leadership were military leaders, not engineers. So when mistakes were made, they had a schedule -maybe running behind and so for many mistakes said "that's good enough; no one will notice" -- and "if they do - people won't let them poop on the parade"... And they were right.. These mistakes were kept, not fixed - and it made NO DIFFERENCE AT ALL. Everyone believed it just the same.
Similar to how Christians will overlook the 91+ times of genocide commanded by Moses then Joshua, as they proclaim Yahweh to be All Loving and opposed to baby slaughter.
They overlook whatever nuances stand in their way, to hold to the beliefs that serve them. Apollo has always behaved much like a religion. I don't blame people for this -- it's how we're wired. I think it's good to realize this, as you assess reality though.