Amazing - totally forgot about this thread! Cheers for the reminder Audionut

I FINALLY worked out a cool way to adjust a frame other than the first DNG in the sequence inside of After Effects using a bit of a mish-mash of squig and Audionut's suggestions with a bit of a twist.
Basically - the crappy way is that you are inside of AE and make your adjustments in ACR when it pops up... Cool.
Then you are playin back the footage and the camera pans around and all of a sudden everything is different and you change your mind on the adjustments, so you right click on your footage in the project browser, click Interpret Footage, click Main, and then select More Options to get back into ACR.
BUT... you end up back at the first frame which is no good at all as you need to see the frame that you want to base your corrections on which is like 3/4 seconds in... Booo

Anyway - the super cool convenient way to get around this is to:
1) go to your project browser, right click the footage and select Reveal in Bridge.
2) Instantly Adobe Bridge pops up with your sequence and you can highlight the whole lot and right click then select Open in Camera Raw.
3) Now you can select any frame on the right hand side, then click Select All, and then perform your adjustments. When you are finished, click "Done".
4)Then all you have to do is right click the sequence in the project browser and click Reload Footage and BOOM - behold your adjustments

Soooooo happy I figured this out. Many thanks for your input dudes! Props!
Ps. For an added bonus - save any corrections you think will work on other shots as a preset inside of Camera Raw. Then you can conveniently apply in Bridge by highlighting all DNG's in the sequence and right clicking then selecting Develop Settings -> [your preset] and then again just right click your clip in the AE project browser, click Reload Footage, and there you go.
Oh - and another great thing is, because of the way the DNG's are named (from zero onwards), you can look at the frame number in the bottom right of the AE comp and then select that frame number inside of ACR so you know for sure you have the correct hero frame selected. AND because this is all inside of Bridge, you can exit the comp you are working on and open and view another sequence so you can match shots (as in match the shot you have open in ACR with a different shot inside of AE). Pure WIN.