Hello,welcome to HCM,
1. Bony spurs can occur due to both reasons (heavy lifting and deposits of calcium with age.
2. If you have aching/pain without manipulation also ,you might continue with a mild painkiller .diclofenac
works better in bone and muscle pains .assess pain ,if low do not make yourself dependent on pills
3. The growth of the spurs is a very slow process in itself .however you can reduce the lifting of heavy weights /try for an alternate aid to lift if unavoidable.
I hope you get a general guideline to work from.
Will be available to help if any more query turns up.