I propose carrying out an experiment involving all miners that regularly sell BTC for USD.
The experiment will consist in not selling any BTC for local currencies on Monday 10 June 2013 by postponing to a later time, like for example the day after.
The purpose of the experiment is to evaluate the consequences on the USD/BTC exchange rate.
Please leave a comment if you are willing to participate.
It's an interesting idea, but unfortunately any news of such experiment with decent participation from miners would probably also circulate out to the buyers and speculators as well. If 50% of miners decide not to sell and 50% of potential buyers heard about it and decide to wait one day to buy, there would likely be little change.
That said, with volume being so low the past few weeks, a small alteration in demand could sway things a little.