diff --git a/examples/diffusers/quantization/pipeline_manager.py b/examples/diffusers/quantization/pipeline_manager.py
index f62aeffca98..5b46c66292a 100644
--- a/examples/diffusers/quantization/pipeline_manager.py
+++ b/examples/diffusers/quantization/pipeline_manager.py
@@ -191,19 +191,25 @@ def _ensure_ltx2_transformer_cached(self) -> None:
         if not self.pipe:
             raise RuntimeError("Pipeline not created. Call create_pipeline() first.")
         if self._transformer is None:
-            transformer = self.pipe.stage_1_model_ledger.transformer()
-            self.pipe.stage_1_model_ledger.transformer = lambda: transformer
-            self._transformer = transformer
+            self._transformer = self.pipe.stage_1_model_ledger.transformer()
+            # Route the ledger getter through this PipelineManager's attribute so the
+            # cached instance lives in exactly one controllable place (self._transformer).
+            # A `lambda: transformer` closure would capture the instance inside the
+            # lambda's cell, which prevents LTX-2's `del transformer` after stage 1
+            # inference from releasing any references — it only drops the local binding.
+            pm = self
+            self.pipe.stage_1_model_ledger.transformer = lambda: pm._transformer
 
     def _ensure_ltx2_video_decoder_cached(self) -> None:
         if not self.pipe:
             raise RuntimeError("Pipeline not created. Call create_pipeline() first.")
         if self._video_decoder is None:
-            video_decoder = self.pipe.stage_1_model_ledger.video_decoder()
-            # Cache it so subsequent calls return the same (quantized) instance
-            self.pipe.stage_1_model_ledger.video_decoder = lambda: video_decoder
-            self.pipe.stage_2_model_ledger.video_decoder = lambda: video_decoder
-            self._video_decoder = video_decoder
+            self._video_decoder = self.pipe.stage_1_model_ledger.video_decoder()
+            # Cache it so subsequent calls return the same (quantized) instance.
+            # Same rationale as the transformer patch: route through self._video_decoder.
+            pm = self
+            self.pipe.stage_1_model_ledger.video_decoder = lambda: pm._video_decoder
+            self.pipe.stage_2_model_ledger.video_decoder = lambda: pm._video_decoder
 
     def _create_ltx2_pipeline(self) -> Any:
         params = dict(self.config.extra_params)