Well been using this routine for along time now but not been so activ in posting here.
Regarding tyrael vs lazy raider:
Every time i start tyrael and is mistweaving i get a wow crash when the fight is most hectic. (15 fps or more dosent matter)
BUT on the other hand when i go with lazyraider it works flawless. So mistweaver fellow boters use lazyraider when healing

When i use my offpec as a dps i use tyrael and that is better and i dont get the crashes.
And the as regarding the malkorok fight, i remove surging mist to be used in the cr, cause it will target a raid member and try heal him up if he is under the % in the rotuine. so u will burn ur mana, just change it to spam uplift as soon 1 raid member is under 99% hp and u will be fine, i usally start by a renew in the beginning to get the shield up quick. (and ofc renewing mist all the time and expel harm...evrything to build chi) in this fight ill do well over 200k hps, and on "normal" boss fights i push out inbetween 75-135 hps depending on fights and raid damage (ooh and ilvl 540 and spirit around 6k)
Well i hope this helps someone atleast