It's amazing what a win over a top 5 team can do for morale. Arkansas' win over Texas A&M fit right in with this college basketball season where ranked teams are dropping like flies. The recap of the game from Dallas News has some neat fun facts about the game. Clearly the biggest factor in the game was Texas A&M's 21 turnovers. Arkansas couldn't force them against Kentucky and paid the price for it - that changed against A&M and it showed.
Also, Fayetteville has been notoriously tough for A&M, they haven't won here since both teams were in the SWC.