We all know of course that there is more than one way to win at this game!
Clearly Morgan does more for teams than the box score indicates and slugger teams need OBP. At the same time, high OBP can be less-expensively acquired than via Morgan IMHO. I would suggest a Keller/Gordon or a Cleon/Gordon combo for about $12M is a better value than Morgan and the $1.5M left over. But that is just my opinion.
Furthermore, Morgan was not really helping this team that much, his stats were:
.250 BA
.416 SLG
.379 OBP
31SB/13 CS
In addition, the team was performing very poorly vs LHs:
.248 BA
.445 SLG
.329 OBP
only 5.41 RPG for a near zero SP team
only 1.83 HR / game
5 games under 500 at game 90
As he had Keller, fulfilling the need for a good lead-off OBP player, not sure why moving out Morgan is considered such a travesty?