Bitcoin is independent. Although I do not see a price increase in that case, especially if he shows that he can still use those 1+ million coins.
If Dorian is Satoshi, I'm leaning towards he doesn't have access to them anymore. Maybe he self-destroyed his wallet as a way to leave bitcoin and wash his hands with it after thinking the government would start getting involved (before prices went up). Maybe he thought that bitcoin would ultimately meet its end because Gavin was meeting with the CIA and his outcome of bitcoin changed from being hopeful to hopeless in a split second.
He already seemed worried/scared about the wikileaks situation & kicking the 'hornets nest'. This Dorian gentleman definitely appears hard-headed, and seems like the type of person that would stick to a decision if he made it on the fly after reaching his tipping point. He reads Gavin's message and comes to the conclusion its all coming to an end and that he will be the one the government comes after. He destroys anything he has relating to bitcoins and disappears in an attempt to protect his identity.
This also makes sense with the possibility that he was partially using his real name and wanted people to stop associating his name with bitcoins to try and keep himself as low profile as possible, fearing that the increased popularity would ultimately lead people to Dorian (him?). If this is the case, he probably hates that he has been up on a pedestal and probably wants us all to just stop talking about him.