Water Dragon, this reply is for you:
your quote
Ironfist, if you don’t advocate going slow on deads, what about the negative? I’ve never had a problem but I always lock my back out keystone style. Of course, my best is 220 for 18 so maybe I’m just not high enough for it to be a problem yet.
Go slow on the positive portion of deadlifts. And I must say, 220 for 18??? What is your reasoning for doing this? Those reps seem a bit high. You said you’re a hardgainer… if you’re lifting for mass, keep the reps below 8 or so, and obviously increase the weight. 18 is too high. Sure, it’s like, you could curl a 20lb dumbell 50 times, but you wouldn’t gain strength or mass from it.
Question for you. I’m seriously thinking about adding squats as my thihs are starting to lag. The problem is, I have no access to a rack so I can only squat what I can clear. I lift outside so I can drop the weight after the set. How do you feel about a lighter set of 20 rep squats after a heavy set of 15 rep deads? Is it even worth it?
Absolutely not. Do NOT squat without a rack. I know other people disagree, but if you’ve ever been stuck under the bar in squats (i have once), unable to get up, you will appreciate the importance of having a rack with safety bars. When it happened to me, I was being stupid and squatting outside the rack. It wasn’t much weight at all, so I was able to just drop it off my back, but that’s not the point. It was dumb and I could have been hurt badly.
Absolutely do not do squats after deads. a) deads will tire out your lower back, and that could cause injury during squats. b) DL’s are a big power movement, and you will be too fatigued to benefit from squats afterwards.
I’m a little worried about the extra strain on my back.
Oops, I just mentioned that 
I’m also not to sure about my theory which is the deads will fatigue my legs enough to get enough benefit out of the aquats using lighter weights.
I guess I said that too. Bottom line, on a particular workout day, do DL’s OR squats, but not both. And no squatting without a rack.
I’m not worried about intensity (as I consider puking a good day) just results.
Uh, I guess, if you don’t mind losing vital nutrients that have yet to be processed by your stomach. Personally I don’t agree with the “I puked so I had a good workout” philosophy, but like I always say, to each their own. IMO if you train intelligently you can achieve at least the same results without puking.
Good luck. No squatting without a cage. And cut the reps down to 5-8. That’s my opinion.
Iron