The orange marks in the binary sunset scene on the Technidisc don't show up on any other version, including the various 35mm and 16mm telecines and preservations. They seem to be unique to that print.
The Tantive shake is so grainy because it was an optical effect. Various frames were optically smeared and repositioned to make it look like the camera was shaking more than it was in the production footage. (I have a theory that the less severe shake we see in the SE is the original on-set shake effect - they had to go back to the production footage, likely not because of any burn marks, but rather because the optically-enhanced version was either too grainy, or had CRI fading problems like some of the other opticals.)
I don't think the orange marks were burned in during the optical process, because the 80s video releases don't have them. Either these marks were not on the scene in the original negative, or if they were, then Lucas/ILM/whoever must have gone back and found the original master footage of the shake optical and cut that in to replace the "burned" dupe version.
The interpositive used for the 80s video transfers is really a mystery to me - it doesn't have the '77 color timing, so it could must come from the O-neg or some element earlier than the timed answer print, yet it has its own weird damage (like the strange blobs when Luke turns on his saber after putting on the helmet). If that damage was actually on the original negative by '82, then it's no wonder that they had to go back and recomposite these scenes in '97...
Now, I just have to wait for Russ Dawson to confirm whether or not the burn marks are on the 80s ITV broadcast. That version is interesting in its own right - it has the mono mix, it has the '77 flyover (but apparently the crawl itself is the EpIV version), and it may have been transferred to video using film chain rather than telecine. A Christmas 1984 ITV promo shows the same Tantive chase shot -1 posted, and it has a similar bluish tone to the first capture of his 35mm print. The other clips in the promo don't - though the color balance reminds me more of the Moth3r and Catnap telecines than any official video release. There's also a brief clip from a 1987 airing elsewhere on YouTube; it has a blue-greenish tint and no panning-and-scanning (i.e., the cropping seems to sit right in the center - perhaps ITV used a widescreen print, and the cropping was done by the film chain operator). I'm almost wondering if it was sourced from a print similar to -1's.