may be worth trying it in one stopmacro call. let me know if this works since it gives me some ideas but i'm at work and can't test til tonight. =)

/stopmacro [target=1stHealer,nodead] [target=2ndHealer,nodead]

you could just ref the tank by name in the 'tankname'target passm eliminating your dependence on party order (which gets hairy in raids/bgs if you don't get grouped properly).