EMD360, interesting. I wonder if the "yellowing" has occurred over time, or if it was actually there immediately when you first applied the Red Max and you only noticed it now because you removed some, and therefore had the two right next to each other for comparison? I wonder what would happen if you tried adding some Red Max back on your "stripped" area first; maybe it would blend in color-wise? That would tell you if it was yellowing over time or if it was just changing the tint in the first place. Might be worth a try prior to stripping the whole coach, just to make sure of what you're dealing with.
I know that the "tint" of my tan MH was definitely changed when I applied the Red Max. It doesn't "seem" to have changed any further over time. One year is coming up on mine, and although I don't notice any "yellowing" (other than the initial "darkening" when first applied), my coach is tan, so it likely wouldn't be very noticeable anyway. I gave it a touch-up coat at around 8 months as it was not quite as shiny as it started out; it still shines like new at this point in time.
Let us know how the stripper works out for you; I'm sure alot of us are curious about it.