Great question @hennessy! I don't think that you necessarily need to stop eating meat or eat less meat when you aren't working out. I think being mindful about what kind of meat that you are eating is the important part. Just like veggies have an awesome bang for your caloric buck, some meats have less calories per ounce than others. I think that when you aren't going to the gym and you want to keep your weight under control eating lean meats like, chicken, pork tenderloin, and lean ground turkey will hep keep those calories down because they have less fat.
Hope this helps! :)