What you want is a way to get SOMETHING to slow down. You can get that by getting something ELSE to speed up. Find two satellites you want to toss, connect with a tether cable, spin them up, cast one forward in orbit and the other backward. Presto, the backward one de-orbits, the other may attain escape and go elsewhere (lots of choices). Cost? only the cost of rotational energy - a tiny amount compared to anything else, can be got from a solar panel. (No propellent cost at all).

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In fact, it may, or may not, be useful; or it may be both useful and not-useful, or neither useful nor useless, or even a state between useful and un-useful. It may be useful to consider this further ... or maybe not.