[Dakota]

Originally Posted by Manny A

...Here's a FED case play:

8.6.18 SITUATION A: R1 is on third base. B2 hits a slow roller to the shortstop who attempts to throw R1 out at the plate. F2 receives the throw behind the plate. Realizing she cannot make a play on R1, she turns to throw B2 out who is advancing to second and (a) is run into by R1 after R1 has crossed the plate causing her to drop the ball (the contact is not malicious); (b) is maliciously run into by R1 after R1 has crossed the plate. RULING: The run would score in (a) and (b), because R1 interfered after touching the plate. If, in the umpire's judgment, the interference prevented F2 from making a play on B2, the umpire shall call B2 out. In (b), R1 is ejected for malicious contact. (3-6-18).

Seems to me this play is very similar to your OP play. What I highlighted in red pretty much sums up that they consider this interference.

Like a lot of case plays, it states facts in a way to set up a clear ruling. F2 has a play on B1 because the case play said she did.