I don't think that you got kicked for saying "ok whatever" it was probably something else like nading instead of racing. If you are nading solo hogs, that isolated is not against the rules but if you are repeatedly nading solo hogs instead of getting in one and racing yourself that is camping and slayer. So if you are nading solo hogs, and passing up hogs, and then you tend to be seen with the RL then it seems to be a trend and an admin will take notice.
My suggestion is to first and foremost get in a hog and head towards your nav and cut back on the slayer and concentrate on getting racing and getting kills from the gunner seat of a hog or driving and team up so your gunner can kill from a hog. Killing while on foot is a sign that this is not happening. Seldom while racing towards your navs in a hog will an admin ever say anything to you or do take any action against you. If they do, it is a mistake (or chase killing and not heading to navs) and we hope you will understand if a mistake is made but it sounds like you were distracted alot from getting your navs. Of course when there are no hogs you can walk, but if you kill you must immediatly take the hog you just killed and not look for another to kill while on foot.
On your question about getting your nav, you can jump out and go to your navs but I personally recommend against it unless it would put you so far behind. Its always best to be teamed up in a hog and to kill the enemy that way. If its your lap or say 1st nav after lap, it may be better to jump out but I usually stay in for the sake of teamwork when this happens to me.
