No *interpretation* of the matter can be as fantastical as the whole concept of purgatory in the first place.
There is no such thing as purgatory and those verses written by Paul do not support it in the least because it is not talking about what Catholics claim it talks about.
It is NOT about cleansing the soul from sin, but rather if the works done were of value or not.
It's the works that are being tested, not the soul being purified.
The low-grade works are burned off and the soul enters heaven.