I am in the same boat your are brother. You have seen more work than me. They only call me in when its lousy weather and the senior girls don't feel like coming in. Or wait until 20 minutes before midnight and call me to come in with no sleep, like they are doing me a favor. I finally found a local non-freight gig who was not afraid to hire someone with teamster background. Which I fully believe was my problem for the longest time on the job search. It has normal day hours M-F, pay is less then ABF but at least its steady and the head games don't happen there at all.
I am still "laid off" but I don't think this its worth going back if I hear, "oh its getting busy again, be ready". It cost me everything to stay there as long as I did. Lastly the other thing that always bothered me was being called in on a Friday after 2 or 3 weeks of no work, and having to listen to the senior girls complaining about that they are working 60 hours a week, meanwhile here I am with 2 dollars in my pocket to get me through 12-14 hours. Something is definitely wrong with the whole set up. So don't feel bad about doubting whether to stay or not, I am thinking its more trouble than its worth, Especially if YRC folds up (which I hope they don't), ABF in my opinion will be right behind them when the non unions go crazy and continue slashing rates to sink us.