Boris PABON shares insights from a challenging case involving a complication with a WEBTM device. Despite its rarity, this case highlights the importance of learning from adverse events. The patient, a 58-year-old woman with a sudden severe headache and a family history of subarachnoid hemorrhage, underwent WEBTM treatment for an anterior cerebral artery aneurysm. However, detachment of the WEBTM proved impossible, leading to prolonged procedural time and critical complications. The presentation explores the team's innovative problem-solving approach, outcomes, and lessons learned.