The goal of used filter reclamation is usually two-fold.
1) They will crush the filters to remove any residual oil out of them. If they do eventually get landfill'd, then that's less used oil to potentially contaminate local water tables.
2) The alternative to landfilling them is recycling them. They still want to crush them probably to get residual oil out, but they can also reclaim the metal.
If you cut your filter open, and especially if you really disassemble it (remove the media from the end caps, etc), you're pretty much accomplishing goal #1, which is to get all used oil out. You can also, in theory, accomplish #2 as well. You can clean off and recycle any metal parts of the filter through your local household recycling programs, if available. You can probably toss the now-dried media in the trash can.