Subject: Re: Bash and Tapper get an A,
If he did do that (which he almost certainly won't), the result would be a bloodbath. Not a quick "let's all rally round for the greater good" anointment of a replacement candidate.

I happen to agree with you.
At any rate, the convention is too late: they were planning on nominating Biden virtually sometime before August 7th (that's Ohio's deadline to get on the ballot; if they wait until their convention they'll miss that).