you leave out the fact that a scientist who could pull the carpet out from under evolution, would have a huge career boost. it's in the professional interest of scientists to one up their peers.
Given the philosophical worldviews accompanying evolution (materialism/naturalism)*, as well as the evolutionary theorists ability to adapt evolution to virtually any data, it would be a daunting task to come up with any way to "pull the carpet out" that would convince the theorists/ materialists.
Furthermore, any scientist that even attempts to openly "pull the carpet out from under evolution" also faces the possibility of an attempt to "pull the carpet out out from under" his career, once the entrenched evolutionary establishment turns on him and labeles him a "creationist".
*Those who only consider only considering "naturalistic" (materialistic) explanations for all phenomena (see below quotes) including origins (before looking at and regardless of the data) are virtually bound to be limited to some sort of evolutionary scenario.
"[W]e have a prior commitment, a commitment to materialism. It is not that the methods and institutions of science somehow compel us to accept a material explanation of the phenomenal world, but, on the contrary, that we are forced by our a priori adherence to material causes to create an apparatus of investigation and a set of concepts that produce material explanations…that materialism is absolute, for we cannot allow a Divine Foot in the door.” (Lewontin, Richard [evolutionist scientist], Billions and Billions of Demons, New York Review of Books, January 9, 1997, p. 28., emphasis added)
"Even if all the data point to an intelligent designer, such an hypothesis is excluded from science because it is not naturalistic." Scott C. Todd
Department of Biology, Kansas State University, 18 Ackert Hall, Manhattan, Kansas 66506, USA Nature 401, 423 (30 September 1999); doi:10.1038/46661 http://www.nature.com/nature/journal/v401/n6752/full/401423b0_fs.html
Many evolutionists (including the NAS and teachers groups) even go so far as to require that "science" itself be defined as being limited to only "naturalistic" explanations:
"The NAS defines science as a search for purely natural explanations for all phenomena. Under this definition, science is bound to oppose any theory of intelligent design, no matter how compelling the evidence. That is fine, but the NAS should admit that this definition is a philosophic choice, and a statement of faith that natural explanations indeed exist for all things, and indeed are true." (A Critical Analysis of Science and Creationism A view from the National Academy of Sciences In relation to Intelligent Design Theory By Casey Luskin)
“If there is one rule, one criterion that makes an idea scientific, it is that it must invoke naturalistic explanations for phenomena … it’s simply a matter of definition—of what is science, and what is not.”
(Eldredge, Niles, 1982, The Monkey Business: A Scientist Looks at Creationism, Washington Square Press)
and the interesting thing about you bringing up this counter-argument, is that you obviously do not apply it to your own belief systems, or the people you reference in support of them. remember that conversation we had about the rafter in your own eye? ya. that one.
My previous comment (which I decided to remove before any comments were posted because I decided that I did't want to take the time to now to get into another subject). applied my comments to "all" scientists, not just evolutionts- hense there was no rafter in my eye (as there wasn't in my eye in the previous conversation either).