I'm building a cabinet for under the extension wing of my TS and one of my pieces of plywood has a pretty good bow in it diagonally from corner to corner. The piece is 27"x30" and is an interior partition separating the router area from the storage area.

Upon dry fitting the cabinet together I noticed that it throws the whole assembly a bit kittywhampus.

A search of smc yielded a method of soaking the convex side with water to get it to expand. I may try this tonight.

Is there a way to get this panel flatter? I thought of making some kerfs in it to relieve the stresses. Has anyone done this or have another suggestion?

Looks aren't a concern as this is an interior piece and the cabinet is for "go" not "show".