Seems like TLR vs Reason showed what teams are capable of able to do and why allowing to bet on your own team is not that good of an idea.
Not saying it was their motives as the bet made by player on their roster was definitely a result of ignorance (as he didn't bet that much and didn't try to hide it), but when team has a right to deny mercs they could abuse it to win some hats.
Still no matter what the motives were Thalash is banned for some time from Saloon.tf nonetheless.
Sorry to do that as you're quite a nice guy and I've seen you bet quite a lot on Saloon and Lounge :/
I have no other choices as you broke both the rules of Saloon and the league you're playing in and while Reason usually acts like this disallows mercs one cannot say for sure that you didn't know that TLR will need a merc and your team could decline it.
It's not about what I believe, but what one could think in the light of facts.