I think it was 53052 that I was thinking of. Never got painted but went early. It did run about for a bit.
Think you might be right - perhaps 44922-4 might be freed up from Taunton and be replaced by something newer.
Be interesting for Yeovil to gain a decker working and confess I can't remember their last regular decker. I do always remember veteran VR 1122 still hanging around the place, even getting a trip on it when it must have been 25 years old on the Weymouth summer express (X67?)
The X67 on Sundays and Bank holidays was a must for us while it lasted, even when Olympians replaced the VRs.
The last double deckers allocated to Yeovil were Olympians 34966/67 in 2008.
In January 2015 Weymouths Olympian 34168 was being stored in Yeovil, Due to a vehicle shortage in the afternoon of the 20th, it came out and did a complete circuit of town route 1. Luckily I was about and able to sample it. Full marks to the local management avoiding cancelling a service.