Ntorq fell. Oil leaked. Advice needed.

I skid on sand at slow speed and fell on the left side. I immediately tended to my cousin who was with me and left the engine on for about a minute while it was sideways. I came back and switched it off and picked it up. Oil started leaking from here. When i pulled on the rubber thing the flow increased, and when i pressed on it the flow decreased. Now the leaking has stopped. The visible damage was only on the plastic body and the foot rest. Why did it leak? Was leaving the engine on while it was on its side the culprit? Can i ride it for a short time to the mechanic?