some think this was Mark but the bible doesn't really give us a good clue as to who this is.
there were a lot of people who followed Jesus around that were not his disciples,
when they came to arrest Jesus this guy probably heard the commotion and jumped up from his bed(from sleeping)
and the soldiers grabbed him,he tore away from them leaving the clothing he had behind.
just imagine someone grabbing your cloths and trying to hold on and you wiggle away,
they have your cloths and you are gone.
I don't think any disciples were arrested.