Losi Xcelorin 2100kv weird noise?

I think the back bearing is bad. I'm not sure how to check bearings for damage, but it seems very loose and when I move it the rotor moves sideways a bit.

But how do I open it? I unscrewed all the screws, tried tapping back and front lightly on the table, but nothing will come out. I don't want to use any force until I find out exactly where to use it.

I tried looking up youtube for guides, but nothing.. ?