Thanks for providing me another incidence of this cable being the culprit in what seems to be a frequently reported bug on this particular model of the MacBook pro.
I'm having the same intermittent trackpad and keyboard issue for the last few weeks. I've narrowed it down to the cable based on feedback from people like yourself and would love to know where you procured your replacement cable from (and the part number if you happen to know it).
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
No reputation gained yet.