how to remove retainer for oven light replacement

Can not find a way to remove wire retainer on oven lite lens retainer to replace oven light bulb.
Any suggestions would be helpful. Later models of Maytag oven in store simply unscrew lens from oven frame.
Manual from manufacturer says to simply support lens when removing wire retainer so it does not fall. It has no discription of how to gain access to wire retainer to remove it or to show how it is constructed to hold the lens in place. Please help.

George

Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=MER5752BAQ

Take a look at Item 13 in Section 4.
It is just held on by a spring clip/wire.
Push the center of the clip up, down, left or right depending how the lamp holder is oriented to release the cover.