Yep, 18/13 18/14 is the best move. I chose to stay on the 18 point, but as planned, I rolled double 4's for the go-ahead win.
However, XG dinged me with an error, so I took a more in-depth look at the position post game. I often hang onto the safety of my opponent's bar point too long, eventually being forced to abandon it with humbling outcomes. This position is a good example of when it's time to make a run for it.