It seems to me that Mark bluffed a call and J105 blew it.
This may well have happened. It affirms my comment about the skippers playing a bit of poker.
Now what if the skipper of the 105 decided to protest. Would there be an argument for Mark.
I believe the following construct may apply to Mark's situation. It would give Mark something to tell the committee.
Figure 5. Where Rule 17 applies without an obstruction

Yellow, reaching faster clear astern becomes overlapped to leeward within two of her hull lengths to leeward of Green, so rule 17 applies to oblige Yellow not to sail above her proper course.
Rule 17, which is a referring to proper course, applies, so Yellow has a proper course.
Yellow wants to take advantage of her better boat speed to get further ahead of Green and gain good position for her mark-rounding. To do this Yellow's best course is to sail high, pushing Green further up to windward.
But sailing high to windward would not be Yellow's best course in the absence of Green. Thus Yellow's best course is not her proper course. If Yellow sails any higher than she would have to get to the mark as soon as possible, she breaks rule 17.
Of course, if a strong lift arrived, which Yellow wanted to follow up, or a right of way boat arrived that Yellow had to keep clear of, responding to these things by sailing high, would be Yellow's proper course.
I believe, when it is all said and done it is what the committee believes to be fair competition that defines the outcome. The rest are options available to the participants to use and apply their skills.