Megalithic Copernicus?
Well, he did live in a stone tower so he could well have been. His own little megalith.
https://www.youtube.com/watch?v=N1E8a5V9h6Y
As for the Teutonic knights he appears to have not been very fond of them.
'In 1519 Copernicus wrote to the King of Poland, asking for help against the Teutonic Knights who were threatening the city. The letter however was intercepted, and the Teutonic Knights took and burned the city (Copernicus and other canons had left the city shortly before).[5]'
https://en.wikipedia.org/wiki/Frombork
It's not surprising the Knights took over. They were in the pay of the pope and other secular rulers.
'In 1234, Pope Gregory IX issued the Golden Bull of Rieti Pietati proximum, confirming the prior deals, stating that the Prussian lands of the Order were only subject to the Pope, not a fief of any other secular or ecclesiastical power. The Roman Curia had already made a conform promise, nevertheless von Salza had insisted to set it down in writing
The bull was again confirmed by Pope Alexander IV in 1257.'
'The Golden Bull of Rimini was a Golden Bull issued by Emperor Frederick II, at his court in Rimini in March 1226[1] to confirm the Teutonic Knights' possessions in Prussia. It was the first of three similar documents, followed by the Treaty of Kruschwitz (Kruschwitz) in 1230, and the papal Golden Bull of Rieti in 1234.'
https://en.wikipedia.org/wiki/Golden_Bull_of_Rimini
In addition to the religious Crusade against the Old Prussians there was 'ethnic cleansing' and population replacement on a massive scale.
'Numerous knights from throughout Catholic Europe joined in the Prussian Crusades, which lasted sixty years. Many of the native Prussians from Sudovia who survived were resettled in Samland; Sudauer Winkel was named after them. Frequent revolts, including a major rebellion in 1286, were defeated by the Teutonic Knights.In 1283, according to the chronicler of the Teutonic Knights, Peter of Dusburg, the conquest of the Prussians ended and the war with the Lithuanians began.
In 1243, papal legate William of Modena divided Prussia into four bishoprics — Culm, Pomesania, Ermland, and Samland — under the Bishopric of Riga. Prussians were baptised at the Archbishopric of Magdeburg, while Germans and Dutch settlers colonized the lands of the native Prussians; Poles and Lithuanians also settled in southern and eastern Prussia, respectively. Significant pockets of Old Prussians were left in a matrix of Germans throughout Prussia and in what is now the Kaliningrad Oblast. Their language eventually became extinct as a separate ethnic group.'
https://en.wikipedia.org/wiki/Old_Prussians
The Church and its client warlords were clearly in empire building mode.