Americans say "line" not "queue." He was most definitely reading off a script. Obama's entire life is a script.
In any case, what happens to the UK after the vote somewhat depends on what happens in the US. If the UK decides for "stay" (globalism) and the US votes for Trump (Nationalism) then that would hurt you. If the UK votes "leave" and the US votes Trump then that would help. Contrarily, if the UK votes "leave" and the US votes in a globalist like Hillary she would most definitely punish you as much as she possibly can. Keep in mind when the EU says the UK will regret leaving, they're not just saying the UK will simply suffer economically; they're threatening the UK with economic suffering. The EU will try to punish the UK if they vote to leave, so be prepared for that.
This vote will change the course of Europe and the US. It's just as big, or possibly bigger, than the US presidential election. I'm very anxious as to what the outcome will be.