I think I've got it! Thanks for posting this issue!

This seems to work fine until you run into something above the /stopcasting that's on cooldown. There it seizes up and waits for that spell to come off cooldown, at which point, other spells are coming off cooldown and round and round and round, never getting back around to the lower macros. You're seeing it earlier than I was because of the first /click you have with the dual Crusader Strikes. All my macros have always been a single "cast."

Workaround? Add the /stopcasting /cast to your Big Button

Code:
#show Consecration
/assist focus
/click sdf_dps1
/click sdf_dps2
/click sdf_dps3
/click sdf_dps4
/use 13
/use 14
/startattack
/stopcasting
/cast Exorcism
/script SetView (4); SetView (4)
You may need to mess around with it and put your trinkets after the stopcasting to avoid the cooldown thing, and it is by NO means perfect, but it works pretty well. It will not work very well for slow spammers or with really bad latency because of the response time between cast/stopcast, but for most normal use, it should be ok. It even fixed my problem with my shaman that I mentioned. So yea you for making me think. Boo you for taking time away from me dinging 72!