One of the Agile Scrum teams that I was coaching Agile Artisans was doing pretty well and I felt had matured enough to be on their own. I was paying less attention to them. They had achieved a good velocity in the recent completed Sprint 14. it was quite high compared to their past velocity. The manager of team sent them a congratulatory message and the team was in high spirits.
I was a bit surprised by the results and looked into the details and found that some large stories that were long pending and blocked in the past due to external dependencies were completed in the sprint. I was pondering on how to take it to the them, when Anjan the Scrum Master came over. He shared that he was almost certain that the team is estimating higher story points for the stories. He knew this was due to the recent increase in velocity and resulting appreciation. (This was a classic case of incorrect messaging be managers/leaders.)
He was aware why the recent velocity was high, but was wary to communicate to the team as they were all on a high, the news had spread and they were the talk of the town. He wanted to know how he could get them back on track without have any adverse reaction. What would be your inputs/approach to this issue?