I've been trained to make them, and have made them, in places where people were trying to kill me.
A higher standard than reasonable man, is, I think, not warranted, here.
That sounds like a reasonable solution, though I would include mechanisms for appeal to account for cases where someone finds themselves in a Well He May Have Been Drunk, But, It Was The Mayor's 16 Year Old Kid Who Claimed You Literally Killed Him With A Chainsaw, So, We Gotta Fire You, Bob* or similar situation.
*some hyperbole,
But I think you see where I'm going with that.