But yes, mine was still fully assembled so easy to get off the stand. I've always used tow straps run under my plenum. I'm sure there's a way to wrap some long ones around the block in a secure way. And since your block is inverted you probably don't even need a cradle so much as couple blocks of wood to set it on.
I'm sure this isn't so much the answer you're looking for as opposed to a workaround. It was much nicer than working under the car to get access to the backside.