A Quick Comment About Gas Prices

For almost 2 weeks, gas at the station I usually use has been $4.099/gallon. Now, crude production (via OCS or ANWR) hasn't increased and no new refineries have come online in the last couple of days, but prices are now $3.999/gallon.
Some have been saying for weeks that oil speculators have been at least part of the problem with rising gas prices. Since some lawmakers in Washington have been talking for the last week about putting more effort into controlling speculation the price of gas has gone down. Now this is not necessarily direct causation, but it could be.
Are speculators backing off crude with reports that Washington plans to monitor more fervently? Is this the reason prices are going down? Does that validate the argument that speculators (like Rep. Shelly Moore-Capito's (R-WV) husband) are a large cause of recent price spikes?