Yeah that is a possibility ! ^^ I only assumed because it was stated that Alyosha helped the gang get rid of Samuel's body following their president's order.
Anyway, it is silly blaming Samuel for his cheating given the fact that we don't know how the relationship was : he could've been coerced/blackmailed. It is obvious that Samuel & the president didn't have a healthy relationship to begin with.

This what cheating is bad