Must every other word reallyI suppose it could be interpreted either way. They do use the phrase his level is stable, which - at least to me - indicate that they're talking about, well, basic level-things. However, there is also the mention of need[ing] to recover a little, and I guess that could both mean that he is not quite (or was not quite) at his best level in terms of shape yet, or - unfortunately - that his back still hurts sometimes.
And with all that being said, I don't think - as IndianCyclist seems to imply - that he'll break his contract, and quit early. However, I could see a situation where his current contract (running to the end of 2023) ends up being his last, I'd hope not, but I wouldn't be overly shocked.