Possibly not.
If things had gone “as planned” though HEx would now be operating from a new purpose-built depot at Langley, so may well have sought either an overhaul of the 332s, or ordered a new, purpose built fleet. Services would be running, or about to start running via the Western Access which is now again gathering dust on the shelf. And electrification would have been completed including the branches due for wiring and Oxford, so would GWR have had units to spare? Probably not.
If they had gone down the fleet replacement route (which my money was on), then I’m sure we’d still be having all the conversations in this thread about it being a waste, or could you use them xyz, and the same answers will have applied.