Crushing the pill will essentially turn the extended release into an instant release. For recreational use this is a good thing generally. You will have a much stronger high for 3-5 hours rather than a weaker one that lasts for 10+ hours. Take 1/2 (20mg) each, orally will be fine. Just crush it up nice and fine, split the powder in half, parachute it or simply toss the powder in your mouth and swallow it down with some juice (tastes very, very bitter, so be quick if you're going the toss n wash route).
EDIT
Strongheart, there is a difference between ODing and dying. If anyone died off 40mg oxycodone it would be very surprising and tragic, but puking and itching and being scared over your shallow breathing for 5 hours isn't exactly a good thing and considered an OD ('over dose' taking more than you should have).