SQL diags to return actual statement executed?

(originally posted in RPG400, I decided to post here as well in case
non-RPG'ers could assist, since my question relates more to SQL programming
than RPG programming.)

Got an RPG program that does a ton of dynamic SQL INSERTs and UPDATEs, which
come from our control tables and, therefore, not actually coded in the RPG
source. Because the statements were prepared, we were able to take the
variable used in the "Execute Immediate :SQLstmt" statement and output it to
our log file.

Now, we are taking a different tack to significantly improve performance.
Instead of using all of the dynamic SQLs, our developer has written an
application to generate the SQLRPGLE source program to do away with the
dynamic prepares. Performance improvement is dramatic but, along with this
change, we apparently lost the ability to log the SQL statement that was
actually executed. The SQL statements still use variables, and we need to
see the statements with the variables converted in the log. We do not know
how to capture this.

A while ago, I was educated in the "Get Diagnostics" statement, and a first
poke at the documentation I thought would turn up something that would
return the statement that was actually executed. But I was unable to find
anything. Am I looking in the wrong spot? FWIW, this is on v5r3.

TIA,
Dan