One thing that bothers me. If Putin really wanted Trump to keep on going as his puppet why allow this public blowjob to happen? Why not stage a show where Trump at least appears tough during the press event?
He is literally trolling America. "I own your President, I'm going to show the world I own your President. And there isn't a god damn thing anyone can do about it."
Trump being under his thumb is really one of the few things Putin has going for him politically, he needs to milk this victory to maintain his standing. Many of his decisions, from annexing Crimea to going all-in on Bashar al-Assad to foreign assassinations, have eroded Russia's ability to project and maintain power abroad and made the lives of his kleptocratic allies appreciably more difficult, particularly when it comes to moving and spending their money.
Displays like yesterday are huge reputation and image boosts for his regime.