Can the harmonic balance come loose?

Well, here we go...

I couldn't keep the crank from turning, however it was on tight enough to turn the engine over obviously.

So I took off the fan, belts ect... and it just seemed weird.
I could move the pulley (still attached to the harmonic balancer up, down, in and out with out hardly any effort at all about 1/8" I would think (although I could be wrong) that the crank would be heavy enough that you wouldn't be able to move it with your fingers? (unless maybe the crank was broke right at the balancer?) but then I wouldn't be able to turn the whole engine over by the crank bolt either.

I guess I'm confused by this? :dontknow:

I made a video with my phone. If you turn up the volume you can hear the noise it makes, and hopefully even though its a dark video you can see how easy it moves. I'm not as slick as my friend (above) that can make cool .gif files :)

Thanks guys!!

[ame="http://www.youtube.com/watch?v=ATMr_SAbG2c"]Bad bearings? - YouTube[/ame]