Not All Speech was Removed
The Muting Declared and Defined
Ezekiel's muting is recorded in chapter 3, verse 26 (NKJV):
I will make your tongue cling to the roof of your mouth, so that you
shall be mute and not be one to rebuke them, for they are a rebellious
But the very next verse (v.27) indicates that this muting is not full (emphasis added):
But when I speak with you, I will open your mouth, and you shall say
to them, ‘Thus says the Lord GOD.’ He who hears, let him hear; and he
who refuses, let him refuse; for they are a rebellious house.
So God is limiting Ezekiel's speech toward Israel (specifically those in captivity, as he was; Ezek 1:1) to just the prophetic words that the Lord desires (and allows) him to speak to Israel. I emphasize "toward Israel" because we see in the very next chapter Ezekiel is allowed to converse with God also, Ezek 4:14—
So I said, “Ah, Lord GOD! Indeed I have never defiled myself from my
youth till now; I have never eaten what died of itself or was torn by
beasts, nor has abominable flesh ever come into my mouth.”
The phrase noted in 3:27 as to an indication of when Ezekiel would be allowed to speak, "Thus says the Lord GOD," is found 122 times in Ezekiel, only two occurrences of which are prior to 3:27, those being 2:4 and 3:11 which are both part of Ezekiel's commissioning to be a messenger. Essentially nearly the entire book is either describing Ezekiel's encounters with God and the visions He is revealing to him, or is the prophetic messages given to Israel, and these latter are regularly qualified with "Thus says the Lord GOD" as Ezek 3:27 stated they would be.
Removal of the Muting
So in Ezekiel 24:25-27, God states:
25 ‘And you, son of man—will it not be in the day when I take from
them their stronghold, their joy and their glory, the desire of their
eyes, and that on which they set their minds, their sons and their
daughters: 26 on that day one who escapes will come to you to let you
hear it with your ears; 27 on that day your mouth will be opened to
him who has escaped; you shall speak and no longer be mute. Thus you
will be a sign to them, and they shall know that I am the LORD.’ ”
When Jerusalem would finally fall, with the temple being destroyed, and word get back to those in captivity, specifically to Ezekiel, then his restrained (i.e. muted) prophetic ministry would be over. He would once again be free to speak for himself as well to Israel.
This is fulfilled in Ezekiel 33:21-22
21 And it came to pass in the twelfth year of our captivity, in the
tenth month, on the fifth day of the month, that one who had escaped
from Jerusalem came to me and said, “The city has been captured!”
22 Now the hand of the LORD had been upon me the evening before the
man came who had escaped. And He had opened my mouth; so when he came
to me in the morning, my mouth was opened, and I was no longer mute.
So yes, the passages you read are Ezekiel talking, even during his "muted" ministry, because when he speaks, he is proclaiming only that which the Lord allows him to as a message to Israel.