This article will show you how to release tokens from a vesting smart contract.
Step One:
Go to https://etherscan.io/, and find the page of your vesting contract. Go to the Code tab. Copy the Contract ABI.
Step Two:
Open a new page, go to the https://www.myetherwallet.com/#contractspage, paste the Contract ABI in the ABI / JSON Interface text box:
Step Three:
Click on Access button. Select release under Read / Write Contract. Then choose your wallet and follow the corresponding instructions to sign the transaction to write to the contract using your beneficiary address. If there are releasable tokens, the vesting contract will send them to the beneficiary.