What is this て-form at the end of a sentence: 「まったく可愛くねー起こし方しやがって！」

Question

That comes from Ranma 1/2. Ranma asked Akane to wake up him up, and she did that by throwing water on him. He then said:

何しやがるんだ！
What the hell are ya doing!

When she left, he then thought out loud

くそー　アカネの奴。　まったく可愛くねー　起こし方しやがって！
That damn Akane, waking me up in the uncutest way ever!

I know "yagaru" is an unpositive version of "morau, kureru".

Yet, I'd instead say

おい、何しやがる｜しやがった！
ったくアカネの奴、全然可愛くねえ起こし方しやがった。

People said this "tte" makes the sentence more emotive. Can you guys explain this further, any give more examples of how to use it?

Answer 1

まったく可愛くねー　起こし方しやがって！

In colloquial speech, the te-form of a verb at the end of a sentence can express 非難 (reproach/criticism/condemnation) or 不満 (complaint/dissatisfaction).

Examples:

「太郎ったら、また脱いだものほったらかしにして！」
「もう、ケンカばっかりして！いいかげんにしなさい！」
「どいつもこいつも、俺をバカにしやがって！」

_{As a side note, the て-form at the end of a sentence can also express 命令/依頼(command/request), 釈明(explanation), 感嘆(exclamation), etc.}

Answer 2

It is merely a omitted form of some sort of longer sentence like:

○○（し）やがって（、嫌いだ・困る。）<-omitted

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Added:

し is the 連用形 of する，て can be understood as a 接続助詞。