Glad my northbound peak VT wasn't too delayed due to this. Been advised the above train with c300 Std and c60 1st is stationery at Polesworth, just north of Nuneaton due to vandalism. Passengers are being transferred to a train on the adjacent line via a ramp...
From RTT it looks like they were picked up by the following 1540 Euston-Manchester running on the Slow, and dropped off at Crewe at 1754 in time for the 1543 Euston-Glasgow via Birmingham to take them onwards.
The transfer seems to have taken about half an hour.
Meanwhile, several down trains were diverted via Stechford-Bushbury, but the 1620 Euston-Manchester took its normal route.
In the Up direction, trains were diverted on to the Slow line through Atherstone for a while.
I was looking for some sign that the Trent Valley reversible signalling was used to keep trains moving, but I can't see any Down trains using the Up Fast.
But the incident seems to have been well managed to cause only 30-45 minutes delay to an hour's worth of trains in the Friday peak.