That was clearly his intent, because other changes to the law could be stymied because they can require 2/3rds support at some time, especially in the senate. But taxes are almost unique because they can only be voted on, one way or another, with a simple majority vote.
Great evidence for Roberts’ craftiness also came with justice Kennedy allegedly being enraged that Roberts “stole” *his* (Kennedy’s) big chance to get written in the law books as the deciding Obamacare vote.
Roberts also inserted a second poison pill into the decision that has ramifications far beyond Obamacare. He ruled that Obamacare cannot be done using the Commerce Clause. (Much of FDRs New Deal was based on expanded federal power using the Commerce Clause. All of that is now thrown into doubt as well.)
Here is a good capsule summary, that does not go into what I previously wrote about taxes but has other good points.