Well, Mrs. Roberts saw him standing around at a bus stop. Nobody seems to have seen him or anyone else "trotting" to 10th & Patton. So, it seems that your only reason for assuming that Oswald trotted anywhere from the rooming house is because you need to get him to 10th & Patton quickly.
"standing around">>> LOL
You need to get him there too slowly... and point out where she said she saw him 'standing around'
I don't need to assume anything. Witnesses ID'd Lee Harvey Oswald as being on scene during the murder
Earlene Roberts Affidavit [Excerpt]
"Oswald went out the front door. A moment later I looked out the window. I saw Lee Oswald standing* on the curb at the bus stop just to the right, and on the same side of the street as our house.
I just glanced out the window that once. I don?t know how long Lee Oswald stood at the curb nor did I see which direction he went when he left there."