This Thing You Call Aggro.

[Treesh]

Frost Shock is front-loaded instant damage - either used right at the beginning of a fight pretty much insures that our warrior won't be able to pull aggro from me. 
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That's why you don't use it immediately all the time, but it's still not a comparatively high aggro spell. I don't have many problems giving up aggro if I use frost shock early in a fight. With Mogo and Marn duoing, we spread aggro around a lot. When all you have is off-tanks and no real main tank, you do what you can. ;) Better everyone a little hurt than one or more people dead. When I frost shock, either the pet or the hunter can pull aggro from me. A warrior certainly can if those two can.

Stoneclaw is actually better now than it used to be. Until the patch that put totems higher up on the hate list, it was basically pointless except for solo play. I've actually used stoneclaw to keep things off the AoEing mage now. Granted, it's only for a couple of seconds because it's not an upgraded stoneclaw totem, but it has made the difference between a dead mage and a live one.

Edit: Yeah, you do seem to be missing some buttons in your screenshot. Mogo uses 57 buttons on a regular basis. Some of the stuff she has on the buttons I could probaby do without, but just having all those different totems really sucks down the available buttons. My rogue Etheramwen, on the other hand, barely uses more than 30 and a lot of those buttons are just for the different poisons she carries around so I don't have to open my inventory to apply them. :)