Glitch that Freezes Armies Attacking an Embarking Army

So, I'm doin' my thing in my game and got ambitious chasing a fleeing army. The fleeing army begins to embark to cross water as I'm still trying to attack. Well, that was about 36 hours ago. They're still "attacking" though aren't losing morale. So, I tried (after a lengthy wait) to pull away and head back to the nearest city. I am unable. My army seems to be perpetually locked fighting my opponent's embarked unit. It's killing my quest. Help?

Game #1222957.