Given that the aceWrapper (defined in Ace.js) does nothing...

```javascript
	destroySession: function(inSession) {
		// TODO: Not sure what should be done exactly.
	},
```

...I think what the user of Ace.js should implement the destruction by properly `null`-ifying the reference(s, including in the Backbone collection) on the edit session. That should be be enough to avoid the memory loss.