>> St. Paul does speak of “every man” repeatedly in the passage. So, no, the passage in question, starting at verse 9, where people are likened to buildings is directed at all of us, not only the clergy,<<
He is still talking about carnal acts of the people at Corinth. The entire passage is referencing whether people are putting their efforts in carnal thought and work or advancing toward more Godly thought and work.
[8 Now he that planteth and he that watereth are one: and every man shall receive his own reward according to his own labour.]
In verse 8, look at the reference to planting and watering of he and Apollo the following reference to man is pertaining to work of he and Apollo. As you keep reading look again at verse 13. He again references the comment in verse 8 and is still talking about the work that ministers have done among the people.
[13 Every man’s work shall be made manifest: for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man’s work of what sort it is.]
There is no reference or inference of any of the purification happening after death. Any attempt to imply it does hinges on heresy.
Every man's work shall be manifest; for the day of the Lord shall declare it, because it shall be revealed in fire (v. 13)
You don't think that is a reference to an event at or after death?
If any man's work burn, he shall suffer loss (v.15)
You don't think loss of hay and stubble is purification?