Using an addon like this does nothing but decrease awareness and potentially even create a dependency, you're not learning what to do next, you're watching for what the addon tells you to do.
Yeah, if you use it improperly you certainly do create a dependency. Just like any addon, tell me do you wait until DBM screams at you to do something every time before you do it?
Or do you use it as a tool to assist you in a raid encounter?
That's the difference between dependency and simply using a tool.
If the OP is seriously doing 50K DPS at that gear level then it's a rotational issue, guess what CLCRet excels at if set up and used properly?
Teaching people the rotation.
Telling him to go without it when he's already having issues isn't exactly good advice, it's just your bias towards the addon.
I've never used CLCRet and I never will, in BC and wrath I used addons to help me with my rotation and when I stopped doing them I not only went from being a middle of the pack raider numbers wise to the top but also stopped dying to mechanics because I was trying to see what I should do next on my addon.
If you read the OP he's already using the addon and it's not working, most likely because he's worried too much about it and isn't actually learning what to do next so when the addon tells him to crusader strike at a time where he shouldn't actually be in melee with a boss it !@#$s him up. As it will constantly for anybody doing the fights in this tier on normal or heroic.
As for the comment about DBM, the only thing I use DBM for is mechanics that can't be reliably tracked in my head, such as when I was doing heroic jin'rohk I watched when static burst was going out so the death knight and I could co-ordinate him AMSing to negate the mechanic. Things like that.
Something like a rotation isn't actually just a string of abilities you can do in a set order when you play a melee especially when you're doing any fight with mechanics due to the fact that there are times where you can't attack, times where doing things unrelated to doing damage are better and times where you have other far more important things to worry about.
If the OP wants to increase his DPS he needs to look up the ret priority system, sit at a dummy for 10-15 minutes until he can get it down cycling from one guardian to the next without missing anything in the rotation. Doing so with the addon won't teach him anything, but doing it without will teach him to monitor roughly when the ability comes up so that in a situation in raiding he won't have to think twice nor look anywhere on his screen except the boss and mechanics coming towards him.