Nice to see a thread on 70E. Seems most people in this trade never even heard of it. I bring this up all the time. I made my employer get me a Proper Arc Flash shield. I use it every time I remove a panel cover. If I suspect a problem, I will than put on my FR shirt.
I have been in your circumstance many times. Show the ignoramous the literature., ie 70E
0 Risk as stated by others. However I personaly will put on FR shirt, hot gloves and shield/hard hat to reset such a breaker. You never know.
