Class D amplifiers have very little phase shift

Somewhere out there is a person who is so concerned with this thread his digestion is in serious danger of shutting down. 

into almost negative numbers

Not almost, negative. When a voice coil is flying backward (relative to the now-changed drive signal), it is a generator of back emf.

We can argue about how long it is out of phase, but the fact remains.
Just agreeing and reinforcing what you said. You were too timid :-)

Now, the practical question is "how well does the amp control the voice coil (aka damping)?" If its very, very good, this overshoot and negative emf will be less. Not zero, but less. No i have not measured - its very hard to do so with non-repetitive signals which is where the problems would likely lie.

BTW i found the blog interesting but need to go backa nd think about what the (other party’s) original chart really meant. Unloaded? Hard to say what it is. Amps frankly are pretty easy if it weren’t for the damned loads :-)

I've seen that graph used on DIY and ASR to claim the same thing. Most of the stuff posted there is way over my head, I never post on those sites just read them so I was trying to figure out what the deal was with this graph and why is didn't  mean what the guy was saying. 

Yet you were one of the first to to pat the OP (who has no idea) on the back in the other now deleted thread

George, you are one of the only people who even know that thread was deleted.  I'm happy to say the moderators brought it back, but this one has better pictures:

https://forum.audiogon.com/discussions/no-class-d-amps-don-t-have-horrible-phase-shift

Here's the problem, I have two charts. Both from the same source.  Both clearly labelled.

Several people have used the first chart to claim it is the amplifier output phase chart. In fact, the actual amp phase is the second. Then George#3 (or 5?) rolls in and says that charts can't be trusted because (gobbledygook).  So... if charts can't be trusted, why is he relying on the first one to make his point????