I have nor read through all the post so I apologize before hand if I repeat other people's comments.
From the inspector POV, bundling/derating would be an issue. The workmanship would be another giving the intent of supporting cable. In the event of a short, an unsupported cable will whip that will put strain on the connections at the end.
As a contractor, I would be mad as hell for the waste of time to install the wire if it was scrap, motifided if they used good wire. Pissed off for the lack of planning for not having the correct material on site.
