Reassign class variable to a blank instance of its class

Question

When I declare a class variable
private var myVar:MyClass = new MyClass();
It creates a new instance of that class that will trace as [Object MyClass].
However, as soon as I assign it to something
myVar = thisOtherVar;
It will now trace as [Object thisOtherVar].
I need to get it back to where it's just an "empty" blank class instance, if that makes any sense at all.
How do I go about doing that? Thanks!

Answer 1

I'm brand new to OOP - I've been watching iTunes U videos and reading books but it's still all pretty abstract in my mind and it's difficult for me to pin point how all that stuff translates to actually writing good code.
Basically, it's an open ended kid's dictionary. You drag the lettes to drop boxes, touch the check to see if it's a word, and then a picture representing the word pops up on the screen.
All of it works except if you try to remove a letter that's already been placed. Originally, I wanted the check button to do a sweep of the dropped letters and see if they had formed a word - but I couldn't figure out a way to do that. So then I started tracking movements of letters in real time, and that's when it got really confusing. I think I just need to start over and try to make the code a bit cleaner. Right now this is what I've got:
if (currentUsedBlank is BlankSquare) {  //if they have removed a letter that has already been dropped
                if (currentUsedBlank != currentBlank) { //and it's been placed back on a different square
                    currentUsedBlank.letter = null;
            else {
                currentUsedBlank.letter = null;
            if (this.dropTarget.parent is BlankSquare && currentBlank.letter == null) {
                SpellingGlobals.lettersInBlanks[SpellingGlobals.lettersInBlanks.length] = this;
                this.x = this.dropTarget.parent.x + 10;
                this.y = this.dropTarget.parent.y - 10;
                var myClass:Class = getDefinitionByName(getQualifiedClassName(MovieClip(this))) as Class;
                var newLetter:MovieClip = new myClass();
                newLetter.x = currentLetter.startPoint.x;   
                newLetter.y = currentLetter.startPoint.y;
                newLetter.letter = currentLetter.letter;
                newLetter.reference = currentLetter.reference;
                newLetter.startPoint.x = currentLetter.startPoint.x;
                newLetter.startPoint.y = currentLetter.startPoint.y;
                newLetter.isVowel = currentLetter.isVowel;
                currentBlank.letter = currentLetter.letter;
                if (SpellingGlobals.isCaps == true) {
                    newLetter.txt.text.toUpperCase();
                    if (SpellingGlobals.isColor == true) {
                        if (newLetter.isVowel) {
                            newLetter.txt.textColor = SpellingGlobals.colorVowel;
                        else {
                            newLetter.txt.textColor = SpellingGlobals.colorCon;
                MovieClip(root).addChild(newLetter);
                SpellingGlobals.copiedLetters[SpellingGlobals.copiedLetters.length] = newLetter;
                currentBlank.alpha = 0;
            else {
                this.x = MovieClip(this).startPoint.x;
                this.y = MovieClip(this).startPoint.y;
            this.stopDrag();