Being trapped or stuck by one's own words or actions; hoisted by one's own petard.
彼は自分の厳しい基準で自縄自縛になっている。
He has been hoisted by his own strict standards.
無理な約束をしたせいで自縄自縛になってしまった。
Because he made an unreasonable promise, he ended up trapped by his own words.
その説明がかえって自縄自縛を招いた。
That explanation actually led to him being trapped by his own argument.