The former world number one and 14-time major winner has had setback after setback as he tries to recapture some sort of form and he was forced to pull out of the Genesis Open in Los Angeles this week and next week's Honda Classic in Florida.
This season he was planning to ease himself back into tournament play before making an assault on The Masters at Augusta in April.
While there has been no official word from Woods or his advisors, the alarm bells must be ringing as to whether he can play at all never mind challenge for the win in the first major of the year.
Steinberg insists the spasms are not related to his three previous back surgeries but also revealed that Woods has been told to not even walk in an attempt to calm the problem.
He told AP: "He flew out here and got to see one of his doctors. Based on the work they did the last couple of days, they advised he just stay horizontal. It's best to listen to the doctors. The ultimate goal is to get out and play.
"The hope was the spasms would calm down and they haven't."
There is no word on when he will return but Steinberg added: "We're not talking about an extended break."