Richard knew that he had no more time so he scooped up what he could in a hurry leaving behind the rest.
The bag was placed over his shoulder when he exited the bathroom and followed behind Rob and Samson.
Rob was holding the back window open as high as he could and he was already pushing Samson outside of it. "Hurry up man."
Rather than getting himself out first, he still made the effort to get Samson out first despite what he had done wrong.
It showed that he was not the type to abandon those close to him.
All he could do was urge Samson to come back to his senses and to get as far away as possible.
With one final shove to him, Samson was pushed out as he was squeezing through the small opening that was created by Rob.
The force of the push and the bad balance he had in his present state caused him to lean forward too much so he lost his balance and support once he was outside of the window.