Well, there are at least two possibilities.
1) Completely untrue - he never texted anything at all. Let's face it, this is a newspaper report we're talking about...
2) He did text - in which case he may have done it before deliberately having an 'accident'...
I find it difficult to accept that anyone would be able to send a text in those circumstances, nor even want to. It'd surely be the last thing on anyones mind...