Thanks everyone, much appreciate it. I will give it a try to remove it tomorrow and see if anything works, though not very confident considering how difficult reaching the opening of the pipe is in the first instance - I really don't know why the car designers have designed it in such a bad way.
..By the way I did actually drive my car today, so far seems to be running fine but at worst case, what if I unable to remove it, does anyone think leaving it there might be okay, considering its plastic after all?