It is a typically Irish approach to fudge the issue at point-of-entry and then behave in a heavy-handed and stupid fashion at the point-of-departure. Surely the simple solution is to process asylum claimants properly - for example, we should have NO asylum-seekers from Nigeria as it is not possible to get to Ireland from that country without passing through another country first. This first country is where they should be making their claim. This should all be sorted out in the first instance and those wrongly claiming asylum should be given a good meal and sent back to the country where they most recently came from. Simple. That would be fair, less expensive and would free up resources to deal with the claims of genuine asylum-seekers, who need all of the help and compassion we can afford to give.
As for the episode above - I grew up in a very working-class area and have experienced how the gardai treat the poor and powerless. To me the above story is very believable, unfortunately.