In my experience, a lot of biologists avoid debates on creationism because it is not a scientific theory. Getting into a debate as a scientist would suggest there is something to discuss scientifically, there is not. Richard Dawkins voiced this publicly many times.
Furthermore, and more importantly, avoiding public debate is very different from changing the results of your research. If you are implying that some people have results that support creationism and keep it to themselves, I would like to hear more about this. I cannot even imagine how you would conduct scientific research on creationism.
Another point: you are using the word "confess" which has negative connotations. It is perfectly normal for a funding agency to voice their concerns on, e.g., the design of an experiment, if they can think of an improvement. There is nothing wrong with this, there is nothing to "confess". In some cases the agency might be altering the design to game the results. That is wrong, of course; but your phrasing is too general.
If noone really knows, than maybe nothing substantial is happening. "slightly threatening phone-call from the funding agency" sounds near paranoid. And again, your wording is way too general. For example, it would include NASA (as the funding agency) ask a laboratory that is designing a detector to make modifications to allow higher resolution in higher energies.