I am confused about "Mueller's legal team obtained an extension on that deadline to a week after they file any post-trial motions, but his lawyers have not yet filed any post-trial motions."(3rd paragraph)

Q1:
What does overall meaning of this paragraph?

Q2:
Why is "file" of "they file any post-trial motions" the present form?
(while "obtained" of "Muller's team obtained" is the past form....)

Q3:
Does "his lawyers" refer to "Manafort's lawyers?"


Context>>>>>>>>>>>>>>>>>>>>>>>>>>>.
Paul Manafort is currently in prison but that's not yet the end of the story for the former Trump campaign chairman.

He was convicted in August in federal district court in the Eastern District of Virginia of five counts of tax fraud, one count of failing to file reports of foreign bank and financial accounts and two counts of bank fraud. However, the jury deadlocked on three counts of failing to file reports of foreign bank and financial accounts, and seven counts of bank fraud and bank fraud conspiracy. A mistrial was declared and the special counsel was ordered to decide whether to retry Manafort before the end of August.

Mueller's legal team obtained an extension on that deadline to a week after they file any post-trial motions, but his lawyers have not yet filed any post-trial motions.

Meanwhile, in his criminal case pending in federal court in Washington, D.C., Manafort then agreed to plead guilty to one count of participating in a conspiracy against the United States, and one count of conspiracy to obstruct justice.

Manafort said he would cooperate with the investigation. In the written agreement, he "agrees that the sentencing in [the D.C.] case and in the [Virginia case] may be delayed until [Manafort's] efforts to cooperate have been completed, as determined by the Government…."