One of this morning's tweets warns the FBI not to destroy McCabe's text messages because he (POTUS) is about to get involved. That I think is a more significant tweet than this particular one we are discussing.
For the anti-Sessions crowd, I can only say that Trump would have fired him if he was truly unhappy with his performance. And when has Trump EVER been afraid to fire somebody? To be anti Sessions is to insinuate that Trump is incompetent and/or being cowed by others.
So why is Trump bashing Sessions then? It's obvious to me. Trump needs to put a lot of distance between himself and Sessions if there are going to be significant indictments of the Clinton and/or Obama crowd. It cannot be perceived that Trump is conspiring with Sessions to take down his political enemies. Trump needs to be just as surprised as the rest of us.
Reading between the lines on Trump’s tweets the past few days, I can only conclude that earthshaking events are on the horizon.
—
Or that he’s watched too much Hannity, who raves on and on every day about earthshaking events on the horizon.
Let's hope this pans out the way you've described.
It is one or the other -- either Trump is not willing to fire the guy (for whatever reason) or it is a strategic game. I don't think we have enough facts to sort it out right now.
Applying a little critical thought to your theory...
If Sessions acts after Trump criticizes Sessions then it would look like Trump is bullying Sessions into prosecuting people.
Both Trump and Sessions would look bad.
No offense or anything, but that is nonsense. He is accused of that daily.