2 Thes 1:9 These shall be punished with everlasting destruction from the presence of the Lord and from the glory of His power
What are they punished with ? Everlasting destruction (Greek olethros : ruin, destroy, death). Where does this everlasting destruction come from ? From the presence of the Lord (who is Jesus, see verse 7) and from the glory of his power. Not from the devil. Just like when Nadab and Abihu brought strange fire before the Lord :
Lev 10:1 Then Nadab and Abihu, the sons of Aaron, each took his censer and put fire in it, put incense on it, and offered profane fire before the Lord, which He had not commanded them.
2 So fire went out from the Lord and devoured them, and they died before the Lord.
There was no exchange going on where the Lord observed this from heaven then permitted Satan to bring destruction on them. They stood before the tangibly revealed presence of God in the tabernacle and the fire went out from that presence. The Lord didn't switch with Satan in the blink of an eye so that Satan could be his stand in. That would have been far worse than their bringing strange fire before his presence.
The same happens here :
Numbers 16:19 Then the glory of the Lord appeared to all the congregation.
20 And the Lord spoke to Moses and Aaron, saying,
21 “Separate yourselves from among this congregation, that I may consume them in a moment.”
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35 And a fire came out from the Lord and consumed the two hundred and fifty men who were offering incense.
The fire didn't come from Satan, it came out from the tangibly revealed glory of God that had appeared before the congregation, the one that God himself spoke from with an audible voice.
I'm sure you can reinterpret all of that so that it will fall in line with your philosophy but that is nothing more than what Universalists do all the time in order to eradicate anything that opposes the general conclusion of their choice. It's just "puzzle solving", employing the intellect to force every piece to fall in line with the general theory. Scientists do it all the time.