The PSL on Friday announced the sanction after Usuthu failed to comply with a CAS-approved ruling from FIFA in connection with a long-running contract dispute between the club and their former player Phinheas Nambandi.
FIFA ordered the Durban outfit pay the R108 6000 claimed by Nambandi and a fine of R150 000 - or further risk being relegated to the National First Division over the matter.
Usuthu, who now sit bottom of the Absa Premiership table with two points from seven games, have reluctantly resolved to make financial amends despite arguing Nambandi's signing in 2013 from Tigers FC was made by a legal entity that no longer owns the club.
Johnson was reluctant to comment on the matter following his side's goalless draw with KwaZulu-Natal rivals Maritzburg United at King Zwelithini Stadium on Tuesday night.
"Guys, there's football and there's non-football, and that you got to understand," Johnson said at the post-match press conference.
"There's coaches and there's managers. In England they are called managers. They run the budget, the buying and selling of the players. In South Africa that is done together.
"I'm a football coach, I love football and I only work for football. I can work for AmaZulu for free, it doesn't bother me.
"But I'll get points, I'll lose points off the football pitch."
Asked if he is confident AmaZulu can retain their PSL status despite the setback, he said: "You always have confidence. None of us, if you are negative you'll die tomorrow.
"In life you have to be confident. Ask Fadlu [Davids, Maritzburg coach], he's very confident about his team going on Friday against [Cape Town City].
"You know God, I had God's number but he doesn't answer. One day he'll. I don't know ... But like I said we are all confident. I'm confident that in the four lines I do the best I can and I do it without ulterior motives.
"I don't do it because I want to break Fadlu's spirit. I don't coach football because when I come on the pitch I'm going to take my rivals out. No, I don't do it because of that.
"I do it for the love of the game and how tactically we can beat each other, and that's what it is all about."
Johnson's side next host high-flying Orlando Pirates at the same venue in Umlazi this Saturday.