It's a horrible analogy. You can't say that. The level of sensitivity and sorrow over black men in prison - one of the very things the NFL wants to address! - is at an all-time high.
The revelation of the analogy, presuming it was a player who told ESPN - which I don't necessarily think is a slam dunk - could hurt future meetings. Now owners know - any slip-up, any inarticulate moment, is going to be leaked. What level of trust is there now? It's the job of ESPN - which did a great job on this story - to get those details, but, if you're an owner, and you're looking at this, you're thinking an offhand comment could turn this into a powder keg.