I can somewhat relate as DS4 is so active at meals. He used to leave the room more, but we have told him that he gets a warning and if he gets up again his meal is over. He does typically sit at the table, but he sits half on the chair so he always falls off. Sometimes he kind of stands to eat. He does great in restaurants though and even at other houses for the most part. He will do a little better if actively engaged in a conversation. He is a pretty messy eater, unlike your DS he often uses his hands and we have to remind him all the time to use utensils. Anyhow, I get the texture issues as my son has them at times (although not with food because he LOVES all food and eats plenty). But I would try not to give in and feed him even though he has those texture issues. The more sensitive children are to that, the more exposure they need. for example my DS doesn't like the feel of shaving cream that much...but enjoys playing with it. So we try to do it more and use it in the bath so at least he can rinse his hands off. He also has sound sensitivity and used to try to get us to flush toilets when he wasn't sure how loud they would be. Now he uses his elbow. It's good to get them to practice it so they can be more comfortable with things. I am not an expert at all. We try all sorts of things with our DS, sometime successful and sometimes not. It's tough to hear comments like the one your mom gave. I have heard my share of comments as well. It is tough to distinguish whether issues are just kids being kids, or whether there is more of an issue that needs addressed.
