What do the phrases 「ことに」 at the end of a sentence and 「を巡り」 mean?

Question

Here is the sentence relating to my question:

院生たちに慰問に現れた葉子を巡り、再び力石とジョーは拳を交えることに。

1. For the word 「を巡り」, does it mean 'concerning' which is similar to the meaning of 「を巡って」?

2. For the word 「ことに」, is it a colloquial short form of 「ことになる」?

Answer 1

1. For the word 「を[巡]{めぐ}り」, does it mean 'concerning' which is similar to the meaning of 「を巡って」?

Exactly. 「～～を巡り」 is a little more formal than 「～～を巡って」. Both express the source of dispute (or a fight in this case).

2. For the word 「ことに」, is it a colloquial short form of 「ことになる」?

Precisely. When what is left unsaid is clear to the readers from the context, words are often omitted like that.