He was replaced the following month by Mark St. John, who performed on Animalize. After contracting arthritis which made it difficult to perform, he was temporarily replaced on the Animalize World Tour by Bruce Kulick; St. John's condition improved, performing two full shows and one partial show with Kiss in November of 1984.
The passage describes a musician who was replaced by another due to health issues. The replacement was temporary, but the original musician eventually recovered enough to perform again.