Electricians use solder wicking to suck off excess solder. If you unsolder the part that is still soldered on, you can use wicking to suck the solder off without smearing it. If it was me I'd leave the solder on there. When you get the hook back you would want to sand the solder until the dull coating comes off and it is shiny solder. Do the same to the finger hook. Put a LITTLE BIT of acid flux on the hook, bind it to the bell in the same place as it was, and use the solder that is already there to solder it back. Makes for a clean job.