The Flying V bit is typical Wikipedia speculation/rubbish. All he had was an Ibanez long scale Flying V which preceded the Gibson short scale 1981 Flying Vs by several years. He must have liked its look and used it on quite a few mimed TV performances, but I doubt whether it ever saw a recording studio from the inside. I have the exact same model and it's not a horrible bass, just docile sounding, but scarcely something you would record with if you had the other instruments Lea had at his hands back then.
And I think his 2007 solo album is actually quite excellent though like a lot of stuff recorded by just one person (he basically played everything on it) it doesn't have the tension that a good band performance has. Slade could have made a great album out of it.
Uwe