I have no insight into what happened to Johnson.
1. Was he always a GOPe guy and I just didn’t know it?
2. Was he always a GOPe guy and hide it until it counted?
3. Was he “captured” by the Intel folks after he became speaker, which now control his positions on issues?
If I was to guess, I would say he was a good guy and the intel folks have captured him causing him to dance to their tune.
Capture can take many forms:
1. Blackmail, as in I know what your skeletons are so do what I say
2. Blackmail, we will plant evidence on you and take you down if you don’t do what I say
3. Blackmail mafia style, do what we say or your loved ones will pay the price
4. etc, many other variations
Most likely “Capture”...his adopted son (who has a record) was busted recently for an illegal pot business in Los Angeles