Thanks for the advice foschatt!
As I mentioned, my family went out of town for two weeks to Sweden. While they were away Dallas continues to sleep in my room while the other two dogs slept in my parent's room. Dallas' behavior greatly diminished during the two weeks. The first 3 mornings or so he would whine & pace. However, as he realized that the other dogs were not being fed until I got up either, he started sleeping in more. I really do think he wakes up & wants out when he hears my step dad getting up for work. My stepdad feeds the other two dogs [we tried having him not feed Dallas] around 5 AM when he is getting ready for work. Therefore, it is someone being up that has been causing him to wake up & whine to be let out.
There is still a chance I may start putting him back in his crate to sleep. Problem is, he is kept crated during the day so I don't really find it fair for him to do both. I'm still working on it I suppose…
He's gotten better but now that they are back in town he has already begun to regress. sigh Around 2 AM my stepdad let our family dogs out & in the process Dallas woke up & basically wouldn't go back to bed afterwards. I let him outside to pee for like 15 minutes. However, when we came back into the house he kept whining & pacing again. He didn't end up finally falling back asleep until after 3 AM! I am quite tired this AM I must say...