Forive a senile old codger who can't spend much time interpreting others' threads because he doesn't have that much left. To "screw the pooch" is of course a very common expression, but to sub "putsch" is indeed very rare, as in

Jennifer's History and Stuff: Ask JenI tried doing a search for "screw the putsch" and got nowhere, but one can imagine why it might happen that the phrase, as written, would always be the ...
jenlars.mu.nu/archives/004760.html

dalehileman