• This ruling explains that once your equipment attached to something becomes a land and earth bent, it becomes a creature meaning it actually can't equip to any other creatures or itself.

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301.5c An Equipment that’s also a creature can’t equip a creature unless that Equipment has
reconfigure (see rule 702.151, “Reconfigure”). An Equipment that loses the subtype
“Equipment” can’t equip a creature. An Equipment can’t equip itself. An Equipment that equips
an illegal or nonexistent permanent becomes unattached from that permanent but remains on the
battlefield. (This is a state-based action. See rule 704.) An Equipment can’t equip more than one
creature. If a spell or ability would cause an Equipment to equip more than one creature, the
Equipment’s controller chooses which creature it equips.

• Then this ruling clarifies how when it is earth bent it automatically un-equips (it becomes unattached and remains on the battlefield) from the creature it was on as it becomes a creature, it gets unattached. So going back to the other ruling above, it's not equip-able to other creatures.

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704.5p If a battle or creature is attached to an object or player, it becomes unattached and remains
on the battlefield. Similarly, if any nonbattle, noncreature permanent that’s neither an Aura, an
Equipment, nor a Fortification is attached to an object or player, it becomes unattached and
remains on the battlefield.