It’s more of a nightmare scenario for the Dems than that.
Hillary trading a pardon for dropping out of the race is as big of a quid pro quo as they come. Especially if the Super Delegates then jump to the sitting Vice President. It’ll be next to impossible to stomp down the accusations of payoffs, bribery and corruption. Which will have enormous traction.
Best scenario is for an under the table deal, nothing put into writing, that has Obama waiting to pardon Hillary on the morning of Jan 20, 2017.
Won’t work.