It's true, if any badge can be applied to Wittgenstein, it's "antiplatonist". But although there surely are some similarities between W's pragmatic/conventionalist stance and Bohr's idealist one, I think that they come from different backgrounds. Bohr thinks in terms of the pragmatically most explanatory theory, whilst W's aim is fully a philosophical one: I think he strived to "demistify" Platonism and show that it breeds on a certain philosophical charm.

As for Hans-Peter Duerr, it's very interesting. You know, it sounds very Qiunean. After all, Quine was the one to argue for a realist holistic view in phil. of science and believed that the entire theory is the elementary unit of explanation. And he also did not discern between mathematical and physical theories.