Firstly, they'd yet to miss a payment for wages yet, which is millions a month, so theres money and its coming from the owners. Also the guys who lent the previous owners the money, are now in charge, its better to spend several million keeping the club going, than lose your entire investment in general.
They aren't remotely assured of relegation yet, and spending an extra 500k on wages, that could maybe be the difference between staying up and not, would change the value of the club for a sale by tens of millions, and really its the current owners choice to risk whatever he wants.
They haven't been played off the park in a lot of their games, and were again ridiculously unlucky to get their player sent off for, Bent tripping himself up. Theres been several other very poor decisions against them this year, and they are still only a few wins from pushing right out of the relegation zone. Three wins would take them to 14th, its hardly an unsaveable situation.
While the last owner obviously needed a huge loan to afford to buy the club and pay wages, he was borrowing real money from the new owner, so this guy actually did have that money spare to loan out, which would suggest he has significantly more money around aswell.
But for people that think managers have no say in the wages, well, thats ridiculous. There might be a club or two out there that tell their managers they have no say, most don't. Wenger is heavily involved in contract renegotiations and its HIS policy to not offer huge wages nor offer over 1 year contracts to 30year old and over players(except when it suits him, like for Silvestre), thats not the boards choice.
The board don't hide their finances from managers, Redknapp would have known how much players were getting, being offered and I would be highly surprised if it was Redknapp saying we have to get X, Y and Z to stay up, if we need to pay them X amount, get them.
Considering the trouble every club he's managed got into, well, yes, I blame him entirely.
I also think its him who comes up with the fancy contracts that persuades money grabbing players to sign. Like Kanu and James, we'll give you a decent wage now, but play X amount of games and you'll get a ridiculous increase in wages and get new contracts.
Spurs should be thanking their lucky stars that Levy is so heavily involved in the clubs transfer dealings, without him a weaker and stupider board would simply believe in Redknapp and he'd spend them into trouble aswell.
But without Redknapps spending on new players all the time, and riding that new player form and constantly bringing in new players to replace those who have lost form or been crapped on by Redknapps ridiculous comments, well, he'll fail and hopefully finally be seen for the completely average/poor manager he is.