First of all, congratulations on all you've accomplished
Being that active is a great thing for your health!
I can't say whether or not you "should" eat your activity points, but you are certainly open to trying and noting the outcome. It could help, it could not help, but you won't know unless you experiment with it.
Have you also been taking measurements, pictures and noting how your clothing fits? You're not solely relying on the scale, yes? For someone who is getting closer to goal, and who does a lot of physical activity you might be changing how you look without it showing up on the scale so clearly.
If you haven't already, you might want to consider incorporating things like measurements into your ideas about goal. You might end up at a size you're very comfortable with, while the scale doesn't change as much.
You're also at a point where things get tougher. You're
so close to where you want to be! Often, disappointingly, for many it means that it takes longer to lose weight. You may also find help in the Featherweights section. (For those who have less to lose.)
Whatever ends up happening, keep up the awesome work.
It might take a while, but you'll get to where you want to be.