It's possible, but you'll need one more Stellar account for this. Account QCHU (original account) will be unable to pay tx fees until you change the low threshold back to 0.
Create one more Stellar account (let's call it "auxiliary" account) with minimum balance 1.1 XLM.
Using Stellar Laboratory prepare a transaction
Use auxiliary account public key as a ...
You can put multiple operations for different accounts (identified by the 'source' parameter in each operation) into the same transaction. If one operation fails then all operations will fail. Instead of sharing secrets, share the transaction and let everyone append their signature. XDR representation is the way to share a transaction.
// tx object to xdr