Cant get my disk out of the wii

Sounds like the mechanism inside of the drive is bent out of shape or needs to be reseated properly so it can accept and eject disks out. This is going to require opening up the Nintendo Wii and getting the drive out of there.

Here is what the inside of the wii drive looks like:
https://www.vgcrepairs.biz/zen_store/images/Wii_dd_btm.jpg

It could be that the plasic piece that holds the discs in place just needs to be moved back into the center position.

Heres a guide to taking apart the Wii:

http://forums.lovingwii.com/nintendo-wii-hardware/425-guide-disassemble-nintendo-wii-video-pictures.html

Hope this info helps.