Samson fans are very vocal and attack the selectors every time he is not selected. Perhaps this is the reason why he is "in and out" rather than permanently out, like Jurel and Jitesh. Do you remember the crowd booing the Indian team when a match was being played at Trivandrum? He was given two matches against a weak opponent. He made 0 runs from two innings and dropped easy catches. What more can be done? There is an oversupply of talented players in India. None of the players can be given unlimited opportunities.
This isn't just about Samson and I am not a great fan of him either, I am talking about the illogical decision by the decision committee like he dropped from ODI after scored century against SA doesn't make sense, if they came into conclusion that he can no longer perform in this level then better leave them out completely instead of giving one or 2 matches in a year then drop them and select then based on IPL performance.