Manning lost the benefit of the doubt long ago. So, until there are no remaining vestiges linking WF to Danny Manning, any problematic issues that arise (like players transferring) that could possibly be attributed to Manning, will be whether accurate or not.
The fact is that players often transfer or ask out of their LOI when a coaching change is made. The most recent example was VT when Buzz left and the Hokies hired Mike Young. Only 3 players from the previous season's active roster returned. The rest transferred or went pro. Then, a year later, two of the remaining Buzz recruits (Nolley and Wilkins) also transferred. Next season, Mike's Young's 2nd year, VT will have almost no one from the Buzz Williams era, and even though he was the VT coach in March 2019. That's just how basketball often works. The same will likely happen here. WF will be playing walkons next year, but now, Forbes is going to have the ability to shape the roster from scratch. It's going to suck next year, but it will get better.
Maybe Manning has spent the last week, attempting to undermine WF basketball, but it's more likely that each of the players that are considering transferring just want to explore their options after the staff that recruited them and coached them left.