While technically correct, this is a newer diver who is asking about a single tank dive he did to 95ft- give him simple the base line answer. Also, I used ascend as in go up and end the dive; you are using it as decrease depth and continue diving on a multilevel dive profile. If you stay at a shallower depth, yes, some tissue compartments would be off-gassing and some would be on-gassing. Given the presented dive depths and time, if he ascends to end his dive he will not have any added deco obligation and the small amount he accrued will begin to clear.
A diver needs to set the gases he is diving into his computer and have them activated--back gas and deco gas. This dive profile had no deco gas set so it was 1 min of decompression on his back gas. A dive that doesn't have any deco gas set might show 10 min of decompression at 10ft, but that same exact dive would only have 3-4 min of deco if 100% O2 was programmed into the computer. Run a dive with GF 50/80 at 70ft for 70 min on 32% nitrox and set 20ft as the last stop. Then run the same dive, but program 100% O2 as a deco gas.
Again you are not totally accurate. First, if a newer diver, as you have assessed the OP is diving in such a way that they are incurring deco obligations then something is very wrong. Standard recreational scuba diving is defined as no-decompression diving, at least by NAUI, PADI, and SSI.
Second, it is just plain wrong to think that you can just go up and end the dive....depending on your deco obligation you may have a specific depth ceiling limit, discussing this in too basic a way may give someone enough info to make them dangerous to themself should they employ that info not understanding the bigger picture.
Third, for the OP to understand the "why" aspect of their question there needs to be a theoretical discussion to one degree or another. Dumbing things down does not necessarily make it better, in this case you are just leaving out vital information.
Fourth, a diver only needs to set the gasses in their computer if they are diving with different gas mixes. It is interesting that you are introducing this notion to the discussion while you want to dumb down the basics. One can go into deco on good old air and conduct their decompression stops breathing that good old normal mix of 21% O2 + 79% N2. Nothing to set in the computer. Your introduction of the use of 100% O2 edges into even more advanced discussion and is totally irrelevant to anything indicated in the OP's post. How do you arrive at discussing computer gas settings and accelerated decompression on 100% O2 when you have assessed the OP as a "newer diver"?
You are correct though, given the dive profile in the graphs the OP presented, as they ascended from the depth they were at they would not be incurring an increase in deco obligation. But it is important for the OP to know, from a basics standpoint that this will not always be the case.
My initial response to your post was not meant to be a "poke in the eye" or a "hey look how smart I am in comparison" type of thing. It was meant to present balanced info to the OP whom I think there are 3 pertinent questions that they should answer:
1. What computer are/were they using?
2. How much dive experience do they have?
3. If not specifically trained to do so, which based on the nature of the info they presented and the question(s) they asked, what are they doing going into deco that this is an issue/question?
other than the responses to those questions the OPs post is a great catalyst to discuss the basics of deco....and given the relative danger, especially if not properly planned, the basic discussion should not be overly simplified, at least not in my professional opinion.
-Z