Reverted changes Zaphod does not approve of.

src/addons/NestedSprite.hx

@@ -137,10 +137,7 @@ class NestedSprite extends FlxSprite
 		var index:Int = FlxU.ArrayIndexOf(_children, Child);
 		if (index >= 0)
 		{
-			if (index < _children.length - 1)
-				_children[index] = _children.pop();
-			else
-				_children.pop();
+			_children.splice(index, 1);
 		}
 
 		return Child;

src/org/flixel/FlxGroup.hx

@@ -340,10 +340,7 @@ class FlxGroup extends FlxBasic
 		}
 		if (Splice)
 		{
-			if(index < --length)
-				members[index] = members.pop();
-			else
-				members.pop();
+			members.splice(index, 1);
 		}
 		else
 		{

src/org/flixel/plugin/TimerManager.hx

@@ -71,10 +71,9 @@ class TimerManager extends FlxBasic
 		var index:Int = FlxU.ArrayIndexOf(_timers, Timer);
 		if (index >= 0)
 		{
-			if (index < _timers.length - 1)
-				_timers[index] = _timers.pop();
-			else
-				_timers.pop();
+			// Fast array removal (only do on arrays where order doesn't matter)
+			_timers[index] = _timers[_timers.length - 1];
+			_timers.pop();
 		}
 	}
 

src/org/flixel/system/debug/Watch.hx

@@ -145,10 +145,9 @@ class Watch extends FlxWindow
 			watchEntry = _watching[i];
 			if((watchEntry.object == AnyObject) && ((VariableName == null) || (watchEntry.field == VariableName)))
 			{
-				if (i < _watching.length - 1)
-					_watching[i] = _watching.pop();
-				else
-					_watching.pop();
+				// Fast array removal (only do on arrays where order doesn't matter)
+				_watching[i] = _watching[_watching.length - 1];
+				_watching.pop();
 
 				_names.removeChild(watchEntry.nameDisplay);
 				_values.removeChild(watchEntry.valueDisplay);

src/org/flixel/system/layer/TileSheetData.hx

@@ -67,10 +67,9 @@ class TileSheetData
 		{
 			if (tileSheetData[i] == tileSheetObj)
 			{
-				if (i < tileSheetData.length - 1)
-					tileSheetData[i] = tileSheetData.pop();
-				else
-					tileSheetData.pop();
+				// Fast array removal (only do on arrays where order doesn't matter)
+				tileSheetData[i] = tileSheetData[tileSheetData.length - 1];
+				tileSheetData.pop();
 
 				tileSheetObj.destroy();
 				return;