OK let me re-read this.

If this happens and transactions stop, yes I guess the value will drop. And once it starts dropping people will start selling them (getting rid of them as they value is decreasing) and with that circulation starts again and the price halts. If more people sell then these are some more transactions. At this point it depends on the people everywhere who own bitcoins to move them around to give them value ?!

That's all out of theoretical imagination LOL