Can I get a more natural shape from an azalea pruned into a ball?

Q Is it safe to keep this new shrub that suddenly appeared? Q

AThe stiff stems and attractive leaves of semi-evergreen Euphorbia mellifera (honey spurge) make a dramatic statement in the garden. Pollinators love the bronzecoloured, honey-scented flowers (inset) that appear in spring. Beware though, the sap is poisonous, so wear gloves when handling. H2m (6½ft) S2.5m (8ft)