Certainly this situation was bad, as he was being delayed from his plans and goals, but maybe he could somehow spin this into his advantage. While Lelouch had been thrown in this situation abruptly, he managed to get a sight of someone nearby (Paine), and said casually while approaching,"Hey...can you help me out here?" for now, he would act like how any innocent person would in this type of situation, and this was supported by the fact that he wore his school uniform at this time.