Blood Rule question ????

[RickyD]

I attended a state sponsored rules clinic this weekend.
The clinician stated the following:
If a player's jersey becomes saturated with blood and it
cannot be cleaned up enough for the officials to allow him
to continue playing, the coach can exchange the player's
jersey with one from a "bench warmer" who the coach had no
intention of playing in the game.
The officials should instruct the scorer to change the player's number in the book.

I qustioned whether this should be a technical foul since
Rule 3.2.2c would seem to require it.
The clinician stated this is NOT a technical foul.

I cannot find support for his position. Any comments.