The answer to your question is YES. You can change the module without a bow press. There are two set screws holding the module to the cam. Just remove them and pick a module that suits you. Install it and you should be on your way.
In the event that one of the screws is "hidden" behind the limb fork all you need to do is squeeze the cable toward the riser to rotate the cam a bit. Hold it while you remove the screw. If you can't hold the cable in there are two ways I use to accomplish it. You can back the weight down evenly with both limb bolts or just zip-tie the cable to the riser while you make the change. It's a relatively simple undertaking.
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