Take a stiff business card or an old credit card and cut it to make a latch opener.
Open all the latches before re-hanging stitches. Slip the angled edge of the tool under the latches to close them.
Use the straight edge to slip under the latches and close them.. Closing the latches will make knitting easier any time you have more than 1 stitch on a needle. There is less chance that the latch will catch causing a jam or mis-formed stitches.