You don't get disqualified or penalized further for signing a scorecard that has a score higher, only DQed for a lower score. Disc golf penalizes four strokes either way.
As far as this thread and time limits, i disagree that Nikko is commintting a penalty. Part of the rule is you get to look at your lie before the 30 seconds counts. From my tourney experience no one really has any idea what 30 seconds actually is. So without someone ready to click a stopwatch once he has assessed his lie, you can't call a penalty.
I see the opposite problem in events. Guys are in way too much of a hurry to putt out, costing them strokes every round. You can wait for the basket and the line of vision to clear, then you can assess your putt, then you have 30 seconds to putt or throw for that matter. If someone walks through your line of vision, you can restart fresh in my opinion.
Where in the heck did you get that part from (in red)?. See Steve's post right before me. You don't get "free time" to 'assess' your putt. Once the area is free and clear of distractions it's free and clear of distractions.
As far as the part in blue, I may be a minority opinion, but there is nothing in this rule that states there is a "re-set". It says AFTER the area is free and clear of distractions you have 30 seconds. It never says 30 consecutive seconds. Therefore the emphasis (to me) is on "ONCE". It makes no mention of "additional distractions leading to additional 30-consecutive seconds." Thirty seconds is 30 seconds. Whether they are 30 consecutive seconds (to me) is something the RC might need to clarify.