Tricky senario for sure. But I guess you did manage to get rid of the obstacle so it was just a matter of reopening the target girl to carry on the interaction. You just got phased and choded out thinking too much about it all and how you might look, etc. If anything the obstacle gave you value as she may have been seen to be chasing you... hardly a bad thing in the eyes of the girls who are seeing this happen.

You just need to plough on with it mate as soon as you can. If not possibly take a breather and reopen the target later.