We are coming close to the nether update, and striders have the poor fate of being killed for the saddle you equiped on them. There is no interface like horses that allows you to un equip a saddle on a strider, in your inventory. This was talked about, but never made it in. Don’t forget please, strider murdering should be illegal

How to confirm: 

equip a saddle on a strider. How do you get it back?