Yeah, the improved UnwrapUVW modifier in Max 8 is hot. You'll easily be cutting your unwrapping times in half, and usually more. It's the closest to "fun" unwrapping gets.
In the UnwrapUVW modifier if you turn on "Select By Element" under Selection parameters, you can click on a tooth in the main viewport and it will select all the faces for that object in the editor window also.
maxscript has access to the 'render UV template' in the unwrapUVW modifier,- shouldn´t be to difficult writing a maxscript for that. on scriptspot they seem to have something like that already: http://www.scriptspot.com/3ds-max/multirenderuv
In max if you collapse the stack UV1 is baked into the mesh as the default UV layout for that object. Then if you apply UnwrapUVW again, change the channel to UV2 and click reset the layout for UV1 will appear in UV2. You can also save UV1, switch to UV2 and load it.
Its probably showing you the truth now . Do a turn to poly and collapse. Then reapply the unwrapuvw and youll be seeing what's actually going on so you can clean up. Chances are theres a bunch of crap lying around in the mesh that is upsetting it. A bit like mayas history
Also you can select multiple objects, apply UnwrapUVW which applies an instance of that modifier to each object and unwrap them as if they where one object or individually if you like. The advantage is that they remain as separate objects and don't need to be split back off after your done.
That happens to me too from time to time, its normally triggered by an action like planar map or automatic unwrap. I can normally get it back by doing some other operations like closing and opening the UVW editor window or collapsing the stack and applying UnwrapUVW again.
3dsmax2009 has a nifty spline unwrap feature added to UnwrapUVW that would work well. Since you're on Max8? I would select an edge that runs the length of the coil, "convert it to shape" which will give you a spline, which you can turn on "generate mapping coordinates". Convert to E-Poly and collapse, then delete the old…