Is there details on what testing lead to this decision?
Some of the communication seems to stem around the practise of equalisation and I wonder if it is just this that lead to the decision or did the DMM testing reveal that the second bolt connected by the wire was useless?
As you say, and as mentioned in the link, it's not possible to tension the previous institu wire sufficiently meaning that in the event of a failure, the wire and the second bolt would be shock loaded. We looked at alternative methods for an institu connection but for the time being, climbers must rig their own setup to equalise the load on the bolts.
This was driven by a ongoing programme of maintenance and review. All the Best